JP6421579B2 - Computer program for traffic signal controller and portable terminal - Google Patents

Description

  The present invention relates to a traffic signal controller and a computer program for a portable terminal. More specifically, the present invention relates to improvement of pedestrian support control that supports crossing of pedestrians by extending pedestrian green time.

  Button operation of a dedicated push button device installed at the intersection or pedestrians hold so that elderly people and people with disabilities can walk across the pedestrian crossing more slowly than ordinary pedestrians Triggered by the reception of an operation signal from a small transmitter, the pedestrian green time is changed to a fixed blue time longer than usual, such as “sensitive control for the elderly” (referred to as “pedestrian support control” in this specification) Is already known (see, for example, Patent Document 1).

JP 2002-150475 A

In the conventional pedestrian support control, the direction of the pedestrian crossing that extends the pedestrian green time is limited to one, and only one preset crossing direction can be used for pedestrians such as the elderly and the disabled. Crossing support is provided to extend pedestrian green time.
For this reason, the pedestrian cannot receive crossing support at the intersection where the crossing direction in which the pedestrian actually wants to pass and the crossing direction on the roadside where the crossing support is performed are different.

  In view of such conventional problems, the present invention provides a traffic signal controller or the like that performs appropriate crossing support in accordance with the pedestrian's intention by performing crossing support according to the crossing direction selected by the pedestrian. For the purpose.

(1) A traffic signal controller according to an aspect of the present invention is a traffic signal controller that performs a pedestrian crossing support, wherein the pedestrian selects a crossing direction selected from a plurality of crossing directions at an intersection. The crossing support including at least one of the first support and the second support defined below can be executed for a plurality of crossing directions at the intersection and the communication unit received from the mobile terminal of the pedestrian, A control unit that executes the crossing support for the crossing direction received by the communication unit.
First support: Extension of pedestrian green time for the crossing direction selected by the pedestrian Second support: Reduction of blue waiting time for the crossing direction selected by the pedestrian

  (12) A computer program according to an aspect of the present invention is a computer program of a portable terminal that wirelessly communicates with a traffic signal controller that performs pedestrian crossing support, and the control unit of the portable terminal includes the portable terminal. A step in which a pedestrian carrying a vehicle receives an input operation for selecting one of a plurality of crossing directions at an intersection, and the communication unit of the mobile terminal performs the traffic signal control on the selected crossing direction. And the communication unit of the mobile terminal transmits signal information including a blue waiting time and a blue remaining time for at least the crossing direction selected by the pedestrian among a plurality of crossing directions of the intersection. Receiving from the signal controller and providing the pedestrian with the received signal information by the control unit of the portable terminal.

  According to the present invention, since crossing support is performed according to the crossing direction selected by the pedestrian, appropriate crossing support along the pedestrian's intention can be performed.

It is a road top view which shows an example of the intersection in which the pedestrian assistance system which concerns on embodiment of this invention was installed. It is a block diagram which shows the structural example of a traffic signal controller. It is a block diagram which shows the structural example of a portable terminal. It is a hierarchical diagram which shows an example of the signal display of an intersection. It is explanatory drawing which shows an example of the calculation method of blue remaining time and blue waiting time. It is explanatory drawing which shows an example of the display screen which can input operation of a cross direction. It is explanatory drawing which shows the example of a display of a blue waiting time and a blue remaining time. It is explanatory drawing which shows the example of a display of a blue waiting time and a blue remaining time. It is explanatory drawing which shows another example of a display of blue waiting time and blue remaining time. It is a sequence diagram which shows an example of the communication procedure of a pedestrian assistance system. It is a sequence diagram which shows another example of the communication procedure of a pedestrian assistance system. It is explanatory drawing which shows the determination process of the optimal crossing order at the time of 2 crossing. It is explanatory drawing which shows the determination process of the optimal walking route in the case of crossing a some intersection.

<Outline of Embodiment of the Present Invention>
Hereinafter, an outline of embodiments of the present invention will be listed and described.
(1) The traffic signal controller of the present embodiment is a traffic signal controller that performs pedestrian crossing support, and the pedestrian selects a crossing direction selected by the pedestrian from a plurality of crossing directions at an intersection. A communication unit that receives from a portable terminal of a person, and a plurality of crossing directions at the intersection can perform crossing support including at least one of a first support and a second support defined below, and the communication unit And a control unit that executes the crossing support with respect to the crossing direction received.

First support: Extension of pedestrian green time for the crossing direction selected by the pedestrian Second support: Reduction of blue waiting time for the crossing direction selected by the pedestrian

  According to the traffic signal controller of this embodiment, the control unit can execute crossing support including at least one of the first support and the second support for a plurality of crossing directions at the intersection, and the communication unit Since the said crossing support is performed with respect to the received crossing direction, the crossing support according to the crossing direction which the pedestrian selected can be performed. For this reason, appropriate crossing support along the pedestrian's intention can be performed.

  (2) In the traffic signal controller of the present embodiment, the control unit calculates signal information including a blue waiting time and a blue remaining time for at least the received crossing direction among a plurality of crossing directions of the intersection, It is preferable that the communication unit transmits the calculated signal information to the mobile terminal.

In this case, signal information including at least the blue waiting time in the crossing direction and the blue remaining time selected by the pedestrian is transmitted to the mobile terminal.
For this reason, the portable terminal that has received the above signal information provides the pedestrian with the signal information in the transverse direction selected by the portable terminal, which is useful information for the pedestrian by providing the signal information to the pedestrian. Can do.

(3) In the traffic signal controller of the present embodiment, it is preferable that the signal information calculated by the control unit includes signal information based on the number of step seconds before the crossing support is executed.
In this case, the portable terminal that has received the signal information provides the pedestrian with the signal information, thereby providing the pedestrian with the blue waiting time and the blue remaining time before performing the crossing support.

(4) In the traffic signal controller of this embodiment, it is preferable that the signal information calculated by the control unit includes signal information based on the number of step seconds after the crossing support is executed.
In this case, the mobile terminal that has received the above signal information provides the pedestrian with the signal information, so that the blue waiting time and the blue remaining time after the crossing support is executed can be provided to the pedestrian.

(5) In the traffic signal controller according to the present embodiment, it is preferable that the communication unit transmits the maximum extension time of pedestrian blue for each of a plurality of crossing directions of the intersection to the portable terminal.
In this way, the portable terminal on the receiving side of the maximum extension time can use the maximum extension time to perform processing such as determining whether or not a pedestrian can cross.

(6) In the traffic signal controller of this embodiment, it is preferable that the communication unit transmits a crossing distance for each of a plurality of crossing directions of the intersection to the mobile terminal.
In this way, the mobile terminal on the receiving side of the crossing distance can perform processing such as calculation of the time required for the pedestrian to cross using the crossing distance.

(7) In the traffic signal controller according to the present embodiment, it is preferable that the communication unit transmits caution information regarding crossing of each of a plurality of crossing directions of the intersection to the mobile terminal.
If it does in this way, the portable terminal which is a receiving side of caution information can perform processing, such as alerting at the time of crossing, by providing the received caution information to a pedestrian.

  (8) In the traffic signal controller according to the present embodiment, the communication unit receives a required crossing time for each crossing direction required for the pedestrian to pass a pedestrian crossing from the portable terminal, and the control unit It is preferable to calculate the pedestrian green time to be extended in the first support according to the required crossing time for each crossing direction received.

  In this case, since the control unit calculates the pedestrian green time to be extended in the first support according to the required crossing time for each crossing direction, compared to the case where the set green time after the extension is a fixed value. Flexible pedestrian support control according to the walking speed of the pedestrian can be executed.

(9) In the traffic signal controller according to the present embodiment, when the first support is executed, the control unit determines completion of the pedestrian crossing from the current position of the mobile terminal, and determines that the crossing is complete. It is preferable to discontinue the pedestrian blue at the time.
In this case, since the pedestrian blue is discontinued when it is determined that the crossing is completed, it is possible to prevent unnecessary reduction of the blue time in the crossing direction due to the continued extension of the pedestrian blue.

(10) In the traffic signal controller of the present embodiment, it is preferable that the communication unit transmits position information of the own device to the portable terminal.
If it does in this way, the portable terminal which is the receiving side of the positional information on a traffic signal controller will be able to perform processing such as approach determination for the traffic signal controller using the positional information.

(11) In the traffic signal controller according to the present embodiment, the communication unit receives the attribute information of the pedestrian from the portable terminal, and the control unit uses the received attribute information as provided information for a vehicle. It is preferable to transmit to the part.
In this way, the vehicle on the attribute information receiving side notifies the driver of the attribute information of the pedestrian who is walking on the pedestrian crossing, so that the driver can be alerted for each attribute of the pedestrian. .

  (12) The computer program of the present embodiment is a computer program of a portable terminal that wirelessly communicates with a traffic signal controller that performs pedestrian crossing support, and the control unit of the portable terminal carries the portable terminal. A step of receiving an input operation for a pedestrian to select one of a plurality of crossing directions at an intersection, and the communication unit of the mobile terminal transmits the selected crossing direction to the traffic signal controller And the communication unit of the portable terminal outputs signal information including a blue waiting time and a blue remaining time for at least the crossing direction selected by the pedestrian among a plurality of crossing directions of the intersection. And the step of the control unit of the mobile terminal providing the received signal information to the pedestrian.

  According to the computer program of the present embodiment, the control unit of the mobile terminal accepts an input operation for the pedestrian to select one from a plurality of crossing directions at the intersection, and the communication unit of the mobile terminal selects the selected crossing. Since the direction is transmitted to the traffic signal controller, the traffic signal controller can be instructed wirelessly in the crossing direction selected by the pedestrian. For this reason, it is possible to cause the traffic signal controller to execute appropriate crossing support in accordance with the intention of the pedestrian.

  Moreover, since the communication part of a portable terminal receives said signal information from a traffic signal controller and the control part of a portable terminal provides the received signal information to a pedestrian, it becomes useful information for a pedestrian. It is possible to provide the pedestrian with signal information in the transverse direction selected by the user.

  (13) In the computer program of the present embodiment, a process in which the control unit of the mobile terminal determines an approach to the traffic signal controller based on the current position of the own device and the position information of the traffic signal controller. Preferably, the method further includes a step of executing, and a step of executing a process of accepting the input operation when the control unit of the mobile terminal detects the approach.

  In this way, the range in which the pedestrian can execute the cross direction input operation can be limited to the vicinity of the traffic signal controller. Therefore, the traffic signal controller can start the pedestrian support control at an appropriate timing when the pedestrian approaches the pedestrian crossing.

  (14) In the computer program of this embodiment, the communication unit of the portable terminal receives a maximum extension time of pedestrian blue for each of a plurality of crossing directions of the intersection from the traffic signal controller; and the portable terminal Preferably, the control unit further includes a step of determining whether or not crossing is possible in each crossing direction based on the received maximum extension time.

  In this case, since the control unit of the mobile terminal determines whether or not crossing is possible for each crossing direction based on the maximum extension time received from the traffic signal controller, if it is impossible to cross, by providing information for alerting, Pedestrians can be notified in advance of crossing directions that are not in time. For this reason, information useful for traffic safety can be provided to pedestrians.

  (15) In the computer program of the present embodiment, the control unit of the mobile terminal calculates a necessary crossing time required for the pedestrian to pass a pedestrian crossing for each crossing direction, and communication of the mobile terminal Preferably, the unit further includes the step of transmitting the calculated required crossing time for each crossing direction to the traffic signal controller.

  In this way, the traffic signal controller, which is the receiving side of the required crossing time for each crossing direction, dynamically sets the pedestrian green time to be extended in the first support using the required crossing time, and walks. It becomes possible to perform flexible pedestrian support control according to the walking speed of the person.

  (16) In the computer program of the present embodiment, the communication unit of the mobile terminal receives a maximum extension time of pedestrian blue for each of a plurality of crossing directions of the intersection from the traffic signal controller; and the mobile terminal Based on the blue waiting time that may occur in the crossing route when crossing the intersection twice, the required crossing time required for walking the crossing route, and the received maximum extension time, It is preferable that the method further includes a step of determining a crossing order when crossing the intersection twice, and a step of providing the pedestrian with the determined crossing order by the control unit of the mobile terminal.

In this case, since the control unit of the mobile terminal determines the crossing order when crossing the intersection twice, and provides the determined crossing order to the pedestrian, the pedestrian determines in advance which crossing order is advantageous. Can be sensed. Therefore, it is possible to provide useful information to pedestrians who need to cross the intersection twice.
In addition, when the control unit of the mobile terminal executes a process such as excluding a crossing order including a pedestrian crossing exceeding the maximum extension time from the selection target, a crossing order that a pedestrian cannot cross is provided as a recommended order. Can be prevented.

  (17) In the computer program of the present embodiment, the communication unit of the mobile terminal receives caution information about crossing of the intersection at each of a plurality of crossing directions from the traffic signal controller, and the control unit of the mobile terminal Preferably, the method further comprises: further using the received attention information to determine the traversing order.

  In this way, the control unit of the mobile terminal performs a process such as excluding the crossing order including the pedestrian crossing corresponding to the attention information from the selection target, and thus the crossing order that may hinder walking. Can be prevented from being offered as a recommended order.

<Details of Embodiment of the Present Invention>
Hereinafter, details of embodiments of the present invention will be described with reference to the drawings. In addition, you may combine arbitrarily at least one part of embodiment described below.

[Overall system configuration]
FIG. 1 is a road plan view showing an example of an intersection J where a pedestrian support system according to an embodiment of the present invention is installed.
In the pedestrian support system shown in FIG. 1, in response to a support request from a pedestrian 4 located in the vicinity of an intersection J, the traffic signal controller 3 has set blue times Tpa and Tpb (see FIG. 4) longer than normal. “Pedestrian support control” for supporting the crossing of the pedestrian 4 is executed as the pedestrian green time.

The direction of each road connected to the intersection J is not particularly limited. However, in the following description, for the sake of easy understanding, the intersection J has a structure in which roads in the east-west direction and the north-south direction intersect each other. The east-west direction is referred to as a “first direction” and the north-south direction is referred to as a “second direction”. Define.
In addition, the sidewalk corner on the southeast side of the intersection J is the point P1, the sidewalk corner on the northeast side of the intersection J is the point P2, the sidewalk corner on the northwest side of the intersection J is the point P3, and the sidewalk corner on the southwest side of the intersection J Is defined as a point P4.

Furthermore, the pedestrian 4 having the portable terminal 5 is present at the point P0 on the sidewalk in contact with the south-facing outflow road, and when the pedestrian 4 reaches the vicinity of the point P1, it is traversed in the first direction or the second direction. And the mobile terminal 5 is operated to instruct the traffic signal controller 3 in the crossing direction.
Note that “Da” in FIG. 1 is the crossing distance of the crosswalk in the first direction (east-west), and “Db” in FIG. 1 is the crossing distance of the crosswalk in the second direction (north-south).

The pedestrian support system according to the present embodiment includes a plurality of vehicle lamps 1A and 1B, a plurality of pedestrian lamps 2A and 2B, a traffic signal controller 3 attached to a column of a sidewalk portion at an intersection J, and a walking Mobile terminal 5 carried by person 4.
The vehicle lamps 1A and 1B are signal lamps that display whether or not a vehicle (not shown) traveling toward the intersection J has the right to pass in a lamp color. The pedestrian lamps 2A and 2B are signal lamps that display whether or not the pedestrian 4 passing through the pedestrian crossing at the intersection J has the right to pass in a lamp color and blinking.

The vehicular lamp 1A is a vehicular lamp that displays whether or not a vehicle passing through the first direction (east-west) roadway has the right to pass. The vehicular lamp 1B is a vehicular lamp that displays whether or not the vehicle passing through the second direction (north-south) roadway has the right to pass.
The pedestrian lamp 2A is a pedestrian lamp that displays the presence / absence of right of passage to pedestrians who cross the first direction (east-west). The pedestrian lamp 2B is a pedestrian lamp that displays the presence / absence of the right to pass to pedestrians who pass through a pedestrian crossing in the second direction (north-south).

  Hereinafter, the vehicle lamps 1A and 1B and the pedestrian lamps 2A and 2B installed at the intersection J are collectively referred to as “signal lamps 1 and 2”.

The traffic signal controller 3 normally follows a predetermined step based on a signal control command or fixed cycle control notified from a central device (not shown) of the traffic control center at the time of not performing point sensitive control such as pedestrian support control. The lamp color switching timing of the signal lamps 1 and 2 is determined.
In addition, when the traffic signal controller 3 performs point sensitive control such as pedestrian support control, the light color of the signal lamps 1 and 2 is switched according to the number of step seconds changed by the control (see FIG. 4). Determine timing.

[Configuration of traffic signal controller]
FIG. 2 is a block diagram illustrating a configuration example of the traffic signal controller 3.
As shown in FIG. 2, the traffic signal controller 3 includes a control unit 31, a lamp driving unit 32, a communication unit 33, a storage unit 34, and a clock unit 35.
The control unit 31 includes one or a plurality of microcomputers. The control unit 31 is connected to other hardware units 32 to 35 via an internal bus or the like, and controls the operation of these hardware units 32 to 35.

The control unit 31 determines and determines the lamp color switching timing based on the step number of seconds by the signal control command of the central device or the periodic control, or, if the point sensitive control is executed, the changed step number of seconds. A lamp color switching signal is input to the lamp drive unit 32 at the timing.
The lamp drive unit 32 includes a semiconductor relay (not shown), and based on the switching signal from the control unit 31, the signal lamps of the respective colors corresponding to the blue lamp, the yellow lamp, and the red lamp of the signal lamps 1 and 2, respectively. The AC voltage (AC100V) or DC voltage supplied to is turned on / off.

The communication unit 33 has a communication interface for performing wired or wireless communication with the central device and other traffic signal controllers 3.
The communication unit 33 includes a communication interface for performing wireless communication with the mobile terminal 5 using a communication protocol supported by the mobile terminal 5, such as a wireless LAN and Bluetooth (“Bluetooth” is a registered trademark). The communication unit 33 also has a communication interface for performing wireless communication with an in-vehicle communication device (not shown) using a predetermined communication protocol (for example, 700 MHz band ITS standard).

  When the communication unit 33 receives a signal control command from the central apparatus, the communication unit 33 passes the received signal control command to the control unit 31. The control unit 31 controls the lamp drive unit 32 according to the signal control command acquired from the communication unit 33.

When the communication unit 33 receives a control packet (for example, step ST <b> 13 in FIG. 10) from the portable terminal 5, the communication unit 33 passes the control packet to the control unit 31. The control unit 31 performs pedestrian support control using predetermined information such as “crossing direction” included in the control packet.
If the control part 31 produces | generates the packet for pedestrians (for example, step ST15 of FIG. 10) containing the provision information (for example, signal information after pedestrian assistance control) for the pedestrian 4, the communication part 33 will show the pedestrian. The packet is transmitted to the portable terminal 5 that is the transmission source of the support request.

When the control unit 31 generates a vehicle packet that includes provision information for a vehicle (for example, traffic jam information received from a central device or a pedestrian who is elderly or disabled is crossing), the vehicle Broadcast packets toward the road.
When the communication unit 33 receives vehicle information useful for traffic control of the central device, such as probe data transmitted and received by the in-vehicle communication devices by inter-vehicle communication, the communication unit 33 transfers the received vehicle information to the central device.

The storage unit 34 includes a hard disk, a semiconductor memory, and the like. In addition to a temporary memory area for various data such as signal control commands, the storage unit 34 includes a storage area for a computer program that executes point sensitive control such as pedestrian assistance control.
The control unit 31 executes predetermined point sensitive control such as pedestrian support control by reading the computer program from the storage unit 34 and executing the computer program. Details of the pedestrian support control performed by the control unit 31 will be described later.

The clock unit 35 includes a clock device that measures the current time with a predetermined accuracy. The clock unit 35 has a clock circuit that operates at a predetermined frequency, and can generate the current time by giving an initial value to the circuit.
The clock unit 35 can receive a time notified from an external device such as a central device, a GPS time, or a time of a radio clock, and has a function of correcting the current time output by the clock circuit using the received time.

[Configuration of mobile terminal]
FIG. 3 is a block diagram illustrating a configuration example of the mobile terminal 5.
In FIG. 3, a foldable mobile phone and a smartphone are illustrated as an example of the mobile terminal 5 held by the pedestrian 4. But the portable terminal 5 should just be an information processing apparatus which the pedestrian 4 can carry and can communicate with the traffic signal controller 3, for example, a tablet computer, a notebook PC, etc. may be sufficient as it.

As illustrated in FIG. 3, the mobile terminal 5 includes a control unit 51, a communication unit 52, a storage unit 53, a display unit 54, a speaker 55, and an operation unit 56.
The communication unit 52 includes a communication interface capable of telephone and data communication via a base station device of a communication carrier, and a communication interface that wirelessly communicates with the traffic signal controller 3 using a predetermined communication protocol such as a wireless LAN and Bluetooth. Have

The control unit 51 includes a CPU, a ROM, a RAM, and the like. The control unit 51 controls the overall operation of the portable terminal 5 by reading out and executing a computer program such as an OS (Operating System) stored in the storage unit 53.
The storage unit 53 includes a hard disk, a nonvolatile memory, and the like, and stores various computer programs and data. The storage unit 51 stores a mobile ID that is identification information of the mobile terminal 5. The mobile ID includes, for example, a unique ID of a contractor, a MAC address, and the like.

The storage unit 53 stores various application software (hereinafter abbreviated as “application”) installed by a pedestrian 4 (hereinafter also referred to as “user”) from a predetermined server according to his / her preference. ing.
In this application, a control packet for requesting execution of pedestrian support control is transmitted, signal information after support is received and provided to the pedestrian 4 from the display unit 54, and the like. A support application 57 that supports traffic is included.

The display unit 54 is composed of, for example, a liquid crystal display. The display unit 54 displays various information included in the pedestrian packet received from the traffic signal controller 3 to the user.
For example, when the graphic information of the intersection J is acquired from the traffic signal controller 3, the display unit 54 displays image data including a plan view or a bird's eye view of the intersection J generated from the graphic information. When the pedestrian packet includes a blue remaining time and a blue waiting time for each crossing direction, the display unit 54 displays the time information as characters or graphics.

The speaker 55 outputs various information included in the pedestrian packet received from the traffic signal controller 3 to the user. The speaker 55 may be a built-in speaker of the mobile terminal 5 or an earphone speaker when the earphone is mounted.
For example, when the name of the intersection J is included in the pedestrian packet, the control unit 51 reads out the name and outputs the sound from the speaker 55. When the pedestrian packet includes the remaining blue time and the blue waiting time for each crossing direction, the control unit 51 reads out the time values and outputs the sound from the speaker 55.

The operation unit 56 generates an operation signal according to a touch interface that generates an operation signal according to a screen touch on the display unit 54, an operation interface that generates an operation signal according to a push button operation, and an audio input to a microphone. Voice interface.
The operation unit 56 outputs an operation signal corresponding to the user's operation input to the at least one interface to the control unit 51, and the control unit 51 performs information processing according to the operation signal acquired from the operation unit 56. .

The mobile terminal 5 of the present embodiment has a time synchronization function that acquires the current time from a GPS signal and corrects the time. Therefore, when communication between the portable terminal 5 and the traffic signal controller 3 is established, the local time between the two is synchronized.
The mobile terminal 5 of the present embodiment measures the azimuth and angular velocity of the pedestrian 4 using a position detection function that measures the current position (latitude, longitude, and altitude) of the pedestrian 4 from the GPS signal, and a built-in direction sensor. It also has an orientation detection function.

[Pedestrian support control according to the crossing direction]
FIG. 4 is a floor plan showing an example of the signal display of the intersection J that is the control target.
The “first direction (east-west)” and “second direction (north-south)” in FIG. 4 correspond to those directions in FIG. In FIG. 4, “PG” means pedestrian blue, “PF” means pedestrian blue blinking, “PR” means pedestrian red, “Y” means yellow signal, and “AR” means all red.

In the example of FIG. 4, a standard 10-tier system is adopted. Therefore, in one cycle, steps (steps) that transit in the order of PG → PF → PR → Y → AR alternately occur in each of the first direction and the second direction.
In the example of FIG. 4, for the sake of easy understanding, a standard “10-story system” signal display in the case of a crossroad intersection is illustrated, but other steps such as a right turn blue arrow are included. It may be.

“Ta” in FIG. 4 indicates the “reference time” of the pedestrian blue PG in the first direction (east-west). The time length of the reference time Ta is the time length of the pedestrian blue PG in the first direction when pedestrian support control is not performed (default). In the illustrated example, Ta = 12 seconds.
“Tb” in FIG. 4 indicates the “reference time” of the pedestrian blue PG in the second direction (southwest). The time length of the reference time Tb is the time length of the pedestrian blue PG in the second direction when pedestrian support control is not performed (default). In the illustrated example, Tb = 22 seconds.

“Tpa” in FIG. 4 indicates “set blue time” in the case of executing pedestrian support for extending the pedestrian blue PG in the first direction.
The time length of the set blue time Tpa is set to be longer than the reference time Ta so that an elderly person or a handicapped person can pass the crossing distance Da in the first direction (see FIG. 1) relatively slowly. In the illustrated example, Tpa = 22 seconds.

“Tpb” in FIG. 4 indicates “set blue time” in the case of executing pedestrian support for extending the pedestrian blue PG in the second direction.
The time length of the set blue time Tpb is set to be longer than the reference time Tb so that an elderly person or a handicapped person can pass the crossing distance Db (see FIG. 1) in the second direction relatively slowly. In the illustrated example, Tpb = 27 seconds.

The control unit 31 of the traffic signal controller 3 walks in either the first direction (east-west) or the second direction (north-south) according to the crossing direction included in the control packet of the support request received from the mobile terminal 5. Whether to perform person support control.
That is, when the crossing direction included in the support request control packet is “first direction”, the control unit 31 extends the pedestrian blue PG in the first direction and includes the crossing direction included in the support request control packet. Is the “second direction”, the pedestrian blue PG in the second direction is extended.

When receiving the support request designating the first direction (east-west), the control unit 31 selects the time zone of the pedestrian blue PG in the first direction to be extended according to the reception timing.
That is, when the support request in the first direction is in the period of Step 1, the control unit 31 extends the reference time Ta of the pedestrian blue PG in Step 1 to the set blue time Tpa. In addition, when the support request in the first direction is during the period of steps 2 to 10, the control unit 31 extends the reference time Ta of the next nearest pedestrian blue PG in the first direction to the set blue time Tpa. To do.

When receiving the support request designating the second direction (north-south), the control unit 31 selects the time zone of the pedestrian blue PG in the second direction to be extended according to the reception timing.
That is, when the support request in the second direction is made during the period of Step 6, the control unit 31 extends the reference time Tb of the pedestrian blue PG in Step 6 to the set blue time Tpb. Moreover, when the assistance request of the 2nd direction was in the period of steps 1-5, 7-10, the control part 31 sets the reference time Tb of the next nearest pedestrian blue PG of the 2nd direction. Extend to time Tpb.

When the pedestrian blue PG in the first direction is extended to the set blue time Tpa, the control unit 31 shortens the time length of the remaining predetermined steps in the same cycle, or the predetermined time in the next cycle. The time length of this step is shortened and adjusted so that the system does not shift (offset does not shift).
For example, the control unit 31 subtracts the increase time (= Tpa−Ta) of the pedestrian blue PG in the first direction from the reference time Tb of the pedestrian blue PG in the second direction (= Tb−Tpa + Ta: FIG. 12 seconds in the example) is the time length of the next pedestrian blue PG in the second direction.

Even when the pedestrian blue PG in the second direction is extended to the set blue time Tpb, the control unit 31 shortens the time length of the remaining predetermined steps in the same cycle, or the predetermined time in the next cycle. The time length of this step is shortened and adjusted so that the system does not shift (offset does not shift).
For example, the control unit 31 subtracts the increase time (= Tpb−Tb) of the pedestrian blue PG in the second direction from the reference time Ta of the pedestrian blue PG in the first direction (= Ta−Tpb + Tb: FIG. 7 seconds in the example) is the time length of the next pedestrian blue PG in the first direction.

[Contents of information provided for pedestrians]
When the control unit 31 of the traffic signal controller 3 executes the pedestrian support control according to the crossing direction, it generates provision information for pedestrians.
The provided information for pedestrians includes, for example, “blue remaining time” and “blue waiting time” for the first direction and the second direction at the current time tp, and the planned number of seconds for each step after the current time tp. included.

FIG. 5 is an explanatory diagram illustrating an example of a method for calculating the remaining blue time and the blue waiting time.
In FIG. 5, “tp” is the current time. Here, it is assumed that the current time tp is the start time of step 6.
“Tr0” is the remaining blue time in the second direction when the pedestrian blue PG is not changed, “Tr1” is the remaining blue time in the second direction when the pedestrian blue PG in the first direction is extended, “Tr2” "" Indicates the remaining blue time in the second direction when the pedestrian blue PG in the second direction is extended.

“Tw0” is the blue waiting time in the first direction when the pedestrian blue PG is not changed, and “Tw1” is the blue waiting time in the first direction when the pedestrian blue PG in the first direction is extended, “Tw2” "" Indicates the blue waiting time in the first direction when the pedestrian blue PG in the second direction is extended.
“Tg0” is the next pedestrian blue time in the first direction when the pedestrian blue PG is not changed, and “Tg1” is the next walk in the first direction when the pedestrian blue PG in the first direction is extended. A person's blue time, “Tw2”, indicates the next pedestrian's blue time in the first direction when the pedestrian blue PG in the second direction is extended.

As shown in FIG. 5, when the current time tp is the start time of step 6, there is no right to cross the first direction (east-west), so for the pedestrian 4 who wants to pass the crosswalk in the first direction Is in a blue waiting state where it cannot pass to the next pedestrian blue.
Therefore, the control unit 31 calculates the blue waiting times Tw0, Tw1, and Tw2 and the next pedestrian blue times Tg0, Tg1, and Tg2 in the first direction, and provides the information for pedestrians.

Specifically, the control unit 31 calculates the blue waiting time Tw0 before support and the next pedestrian blue time Tg0 using the number of seconds in Step 1 and Step 6 before changing the pedestrian blue PG. In the illustrated example, Tw0 = 40 seconds and Tg0 = 12 seconds.
When the control unit 31 extends the pedestrian blue PG (step 1) in the first direction and changes the number of seconds in step 1 and step 6, the number of seconds in step 1 and step 6 after the change is used. Then, the blue waiting time Tw1 and the next pedestrian blue time Tg1 are calculated. In the illustrated example, Tw1 = 30 seconds and Tg1 = 22 seconds.

  When the control unit 31 extends the pedestrian blue PG (step 6) in the second direction and changes the number of seconds in step 1 and step 6, the control unit 31 sets the number of step seconds in step 1 and step 6 after the change. The blue waiting time Tw2 and the next pedestrian blue time Tg2 are calculated. In the illustrated example, Tw2 = 45 seconds and Tg2 = 7 seconds.

As shown in FIG. 5, when the current time tp is the start time of step 6, since there is a right of passage in the second direction (east-west), the pedestrian 4 who wants to pass the crosswalk in the second direction. For this, it is possible to pass through a pedestrian crossing without waiting for a signal.
Therefore, the control unit 31 calculates the remaining blue time Tr0, Tr1, Tr2 in the second direction and provides the information for pedestrians.

Specifically, the control unit 31 calculates the remaining blue time Tr0 before support using the number of seconds in step 6 before changing the pedestrian blue PG. In the illustrated example, Tr0 = 30 seconds.
When the control unit 31 extends the pedestrian blue PG (step 1) in the first direction and changes the number of seconds in step 6, the remaining blue time Tr1 using the number of seconds in step 6 after the change. Is calculated. In the illustrated example, Tr1 = 22 seconds.

  When the control unit 31 extends the pedestrian blue PG in the second direction (step 6) and changes the number of seconds in step 6, the remaining blue time is obtained using the step number in step 6 after the change. Tr2 is calculated. In the illustrated example, Tr2 = 37 seconds.

When the pedestrian blue PG in the first direction is extended, the control unit 31 calculates the following signal information at the current time every time a predetermined time (for example, 1 second) elapses, and calculates the calculated signal information at the current time of walking. Information provided to users.
a1) Blue waiting time Tw1 in the first direction and crossing support in the first direction and the next pedestrian blue time Tg1
a2) Blue remaining time Tr1 in the second direction after crossing support in the first direction
a3) Seconds of each step after current time tp after crossing support in the first direction

When the pedestrian blue PG in the second direction is extended, the control unit 31 calculates the following signal information at the current time every time a predetermined time (for example, 1 second) elapses, and calculates the calculated signal information at the current time Information provided to users.
b1) Blue waiting time Tw2 in the first direction and crossing support in the second direction and the next pedestrian blue time Tg2
b2) Blue remaining time Tr2 in the second direction after crossing support in the second direction
b3) Seconds of each step of transition to reception time tp after crossing support in the second direction

In the present embodiment, the control unit 31 calculates the following signal information before crossing support at the present time every time a predetermined time (for example, 1 second) elapses, and calculates the calculated signal information as provided information for pedestrians at the current time. To do.
c1) Blue waiting time Tw0 in the first direction before crossing support and the next pedestrian green time Tg0
c2) Blue remaining time Tr0 in the first direction before crossing support
c3) Seconds of each step after reception time tp before crossing support

Note that the signal information before crossing support may be always transmitted to the outside and provided to the portable terminal 5 regardless of whether or not a support request is made.
In addition, as a result of performing the crossing support in either the first direction or the second direction as a result of the crossing support, if the signal information after the crossing support is to be transmitted, for the above signal information before the crossing support, The provision may be omitted without transmitting to the mobile terminal 5.

When the control unit 31 of the traffic signal controller 3 calculates the signal information every predetermined time as described above, the calculated signal information is converted into a pedestrian packet having the portable ID of the transmission source of the support request as the transmission destination. include.
The control part 31 performs transmission of said packet for pedestrians for every calculation period (for example, 1 second) of signal information.

In the example of FIG. 5, the case where the current time tp is the start time of Step 6 is illustrated, but the crossing in both the first direction and the second direction, such as when the current time tp is included in Steps 2 to 5, for example. The direction may be blue waiting.
In this case, the control unit 31 calculates the current blue waiting time and the next pedestrian green time for each predetermined calculation period in both the first direction and the second direction.

[Input operation in the transverse direction to the mobile terminal]
Next, an input operation in the transverse direction that can be performed by the pedestrian 4 on the mobile terminal 5 will be described. Information processing when there is an input operation in the transverse direction is one of the functions provided in the support application 57 executed by the control unit 51 of the mobile terminal 5.

Here, it is assumed that the portable terminal 5 of the pedestrian 4 is in a range where wireless communication with the traffic signal controller 3 is possible and is located relatively close to any of the points P1 to P4.
In this case, when the pedestrian 4 performs a predetermined input operation on the operation unit 56 of the portable terminal 5, the control unit 51 generates a control packet for a support request addressed to the traffic signal controller 3, and communicates the generated control packet. The unit 52 transmits wirelessly. The control packet generated by the mobile terminal 5 includes a “crossing direction” indicating a direction in which the pedestrian 4 wants to cross, a “mobile ID” of the mobile terminal 5, and the like.

Various methods can be employed for the input operation in the transverse direction with respect to the portable terminal 5 depending on the interface provided in the operation unit 56 of the portable terminal 5. For example, FIG. 6 is an example of a display screen 58 that is suitable for the touch panel display unit 54 and that allows a cross-direction input operation.
In the example of FIG. 6, the display unit 54 of the mobile terminal 5 displays an image corresponding to the intersection J on the display screen 58 of the display unit 54, and the first direction (east-west) and the second direction ( Thick arrows 59A and 59B respectively corresponding to the north and south) are displayed.

The original data of the intersection image on the display screen 58 may be data provided from the traffic signal controller 3 or data stored in advance by the mobile terminal 5.
In FIG. 6, when the pedestrian 4 touches the arrow 59A in the first direction on the display screen 58, the control unit 51 sets the crossing direction included in the control packet for the support request as the first direction.
Conversely, when the pedestrian 4 touches the arrow 59B in the second direction on the display screen 58, the control unit 51 sets the crossing direction included in the control packet for the support request as the second direction.

In addition, in the case of the portable terminal 5 corresponding to the voice input, the pedestrian 4 speaks the direction of the pedestrian 4 and the direction corresponding to the planned direction of movement toward the portable terminal 5. Also good. Voice input is useful for people with disabilities who are blind.
In the case of the portable terminal 5 having a camera function and an AR (Augmented Reality) function, the pedestrian 4 presents the portable terminal 5 in the crossing direction that the pedestrian 4 wants to cross and touches the image of the pedestrian crossing projected on the display unit 54. You may decide to do it.

[Information provision processing by mobile terminal]
Next, an example of the information provision process in which the portable terminal 5 provides the pedestrian 4 with the signal information received from the traffic signal controller 3 will be described. This information providing process is one of the functions provided in the support application 57 executed by the control unit 51.

7 and 8 are explanatory diagrams showing examples of display on the display screen 58 of the blue waiting time and the remaining blue time.
Among these, FIG. 7 is a display example of signal information received from the traffic signal controller 3 that has supported the crossing in the first direction (east-west) in accordance with the designation of the crossing direction by the pedestrian 4. FIG. 8 is a display example of signal information received from the traffic signal controller 3 that has supported crossing in the second direction (north-south) in response to designation of the crossing direction by the pedestrian 4.

  In the display examples of FIGS. 7 and 8, the mobile terminal 5 receives each signal information (Tw1, Tg1, Tw2, Tg2, Tr1, Tr2, etc.) at the current time tp in FIG. Is illustrated. Therefore, the number of seconds of each signal information in the display examples of FIG. 7 and FIG. 8 matches the number of seconds of each signal information shown in FIG.

As shown in FIG. 7, the control unit 31 displays the first direction (east-west) arrow 59 </ b> A in black, for example, to indicate the transverse direction designated by the pedestrian 4 by the input operation (the first direction in the case of FIG. 7). ) Is displayed in an identifiable manner.
The control unit 31 displays a larger display area at the end of each arrow 59A, 59B as a display area for signal information after crossing support. The control unit 31 displays signal information after crossing support in a large display area.

For example, in the large display area at the end of the arrow 59A, the blue waiting time Tw1 in the first direction and the next pedestrian blue time Tg1 after the crossing support in the first direction are displayed as “30 seconds until blue start, blue time 22 seconds. "Is displayed.
Thereby, the pedestrian 4 can detect the blue waiting time Tw1 and the pedestrian blue time Tg1 in the first direction when the crossing support in the first direction specified by the pedestrian 4 is performed.

Further, in the large display area ahead of the arrow 59B, the blue remaining time Tr1 in the second direction after the crossing support in the first direction is displayed as “blue remaining 22 seconds”.
Thereby, the pedestrian 4 can perceive the blue remaining time Tr1 in the second direction when the crossing support in the first direction designated by the pedestrian 4 is performed.

  The control unit 31 displays a smaller display area on the larger display area at the tip of each arrow 59A and 59B as a display area for signal information before crossing support. The control unit 31 displays signal information before crossing support in a small display area.

For example, in the small display area at the end of the arrow 59A, the blue waiting time Tw0 in the first direction before the crossing support and the next pedestrian blue time Tg0 are as follows: “40 seconds until blue start, blue time 12 seconds” Is displayed.
Therefore, the pedestrian 4 compares the numerical values of the signal information displayed in each display area, thereby reducing the blue waiting time in the first direction when the crossing support in the first direction specified by the pedestrian 4 is performed. The amount of increase and the amount of pedestrian green time can be detected.

Further, the blue remaining time Tr0 in the second direction before the crossing support is displayed as “blue remaining 32 seconds” in a small display area at the tip of the arrow 59B.
Accordingly, the pedestrian 4 compares the numerical values of the signal information displayed in the respective display areas, thereby reducing the remaining blue time in the second direction when the crossing support in the first direction designated by the pedestrian is performed. You can detect the amount.

As shown in FIG. 8, the control unit 31 displays a cross direction (second direction in the case of FIG. 8) designated by the pedestrian 4 by an input operation, for example, by displaying the arrow 59B in the second direction (north-south) in black. ) Is displayed in an identifiable manner.
The control unit 31 displays a larger display area at the end of each arrow 59A, 59B as a display area for signal information after crossing support. The control unit 31 displays each time information after the crossing support in a large display area.

For example, the blue remaining time Tr2 in the second direction after the crossing support in the second direction is displayed as “blue remaining 37 seconds” in the larger display area of the arrow 59B.
Thereby, the pedestrian 4 can perceive the blue remaining time Tr2 in the second direction when the crossing support in the second direction specified by the pedestrian 4 is performed.

Also, in the large display area ahead of the arrow 59A, the blue waiting time Tw2 in the first direction and the next pedestrian blue time Tg2 after the crossing support in the second direction are displayed as “45 seconds until blue start, blue seconds 7 seconds. "Is displayed.
Accordingly, the pedestrian 4 can detect the blue waiting time Tw2 and the pedestrian blue time Tg2 in the first direction when the crossing support in the second direction specified by the pedestrian 4 is performed.

  The control unit 31 displays a smaller display area on the larger display area at the tip of each arrow 59A and 59B as a display area for signal information before crossing support. The control unit 31 displays signal information before crossing support in a small display area.

For example, in the small display area at the end of the arrow 59B, the remaining blue time Tr0 in the second direction before the crossing support is displayed as “blue remaining 32 seconds”.
Accordingly, the pedestrian 4 increases the remaining blue time in the second direction when the crossing support in the second direction specified by the pedestrian 4 is performed by comparing the numerical values of the signal information displayed in each display area. You can detect the amount.

Also, in the small display area at the end of the arrow 59A, the blue waiting time Tw0 in the second direction before the crossing support and the next pedestrian blue time Tg0 are “40 seconds to start blue and 12 seconds blue time”. Is displayed.
Therefore, the pedestrian 4 increases the remaining blue time in the first direction when the crossing support in the second direction specified by the pedestrian 4 is performed by comparing the numerical values of the signal information displayed in each display area. The amount of decrease and the amount of pedestrian green time can be detected.

As described above, since the traffic signal controller 3 calculates signal information every predetermined time (for example, 1 second) and transmits it in a pedestrian packet, the mobile terminal 5 displays the current signal information, for example, every second. To get to.
Therefore, the control unit 31 can update the number of seconds of the signal information displayed in each display area on the display screen 58 of FIGS. 7 and 8 every second. Thereby, the number of seconds of the signal information such as the blue waiting time is displayed by the countdown method.

  In the display examples of FIGS. 7 and 8, signal information other than the crossing direction designated by the pedestrian 4 is displayed, but this display is omitted, and only the signal information in the crossing direction designated by the pedestrian 4 is displayed. You may decide.

In the display examples of FIGS. 7 and 8, the number of seconds for each type of signal information before and after crossing support is displayed separately in two types of display areas, but the amount of increase or decrease in the number of seconds before and after crossing support. May be combined into one display area.
For example, when the number of seconds after crossing support and the increase or decrease of the number of seconds changed before and after crossing support are collected in one display region for each type of signal information (Tw, Tg, or Tr) The following display formats are possible.

That is, in the case of FIG. 7, “30 seconds until blue start (10 seconds ↓)” and “blue time 22 seconds (10 seconds ↑)” are displayed in one display area at the end of the arrow 59A which is the designated direction. Then, “blue remaining 22 seconds (10 seconds ↓)” is displayed in one display area ahead of the arrow 59B which is the non-designated direction. “↑” represents an increase in time, and “↓” represents a decrease in time.
In the case of FIG. 8, “blue remaining 37 seconds (5 seconds ↑)” is displayed in one display area ahead of the arrow 59B which is the designated direction, and one display area ahead of the arrow 59A which is the non-designated direction. “45 seconds until blue start (5 seconds ↑)” and “7 hours blue time (5 seconds ↓)” are displayed.

  Also, for each type of signal information (Tw, Tg or Tr), a simple calculation formula including the number of seconds after crossing support and the number of seconds before crossing support for calculating this is displayed in one display area. The following display formats are conceivable when putting together.

That is, in the case of FIG. 7, “30 seconds until the start of blue (40 seconds−10 seconds)” and “blue time 22 seconds (12 seconds + 10 seconds)” are displayed in one display area ahead of the arrow 59A that is the designated direction. And “blue remaining 22 seconds (32 seconds−10 seconds)” is displayed in one display area at the end of the arrow 59B which is the non-designated direction.
In the case of FIG. 8, “blue remaining 37 seconds (32 seconds + 5 seconds)” is displayed in one display area ahead of the arrow 59B which is the designated direction, and one display ahead of the arrow 59A which is the non-designated direction. In the area, “45 seconds until blue start (40 seconds + 5 seconds)” and “blue time 7 seconds (12 seconds-5 seconds)” are displayed.

FIG. 9 is an explanatory diagram showing another display example on the display screen 58 of the blue waiting time and the remaining blue time. The display example of FIG. 9 shows an example of information that the control unit 31 displays on the display screen 58 before the pedestrian 4 specifies the crossing direction (before crossing support).
In this case, the control unit 31 displays the display area of signal information before crossing support one by one at the tip of each arrow 59A, 59B. The control part 31 displays each time information before crossing assistance in those display areas.

For example, in the display area ahead of the arrow 59A, the blue remaining time Tw0 in the first direction and the next pedestrian blue time Tg0 before crossing support are displayed as “40 seconds until blue start, blue time 12 seconds”. The In the display area ahead of the arrow 59B, the blue remaining time Tr0 in the second direction before crossing support is displayed as “blue remaining 32 seconds”.
As described above, for example, when only the signal information before crossing support is received, the mobile terminal 5 may display only the signal information on the display screen 58.

In the display examples of FIGS. 7 to 9, the signal information such as the blue waiting time and the blue remaining time is displayed numerically in a predetermined display area, but the numerical values are expressed in various shapes such as a bar graph and a pie graph. Thus, the signal information may be displayed by the indicator method.
Further, provision of signal information such as the blue waiting time and the remaining blue time to the pedestrian 4 can also be performed by sound output from the speaker 55. Providing signal information by voice output is useful for the visually impaired.

[First communication procedure]
FIG. 10 is a sequence diagram showing an example (first communication procedure) of communication procedures between the traffic signal controller 3 and the mobile terminal 5 constituting the pedestrian support system.
In FIG. 10, “traffic signal controller 3” and “portable terminal 5” are processing entities, but the actual processing entity is the control unit 31 (see FIG. 2) of the traffic signal controller 3 and the portable terminal. 5 control unit 51 (see FIG. 3). This also applies to the case of FIG. 11 described later.

The communication procedure of FIG. 10 is a communication procedure suitable when the communication unit 33 of the traffic signal controller 3 can communicate with the portable terminal 5 over a relatively wide range (for example, several tens of meters) by a wireless LAN or the like.
As shown in FIG. 10, the traffic signal controller 3 transmits a broadcast packet from the communication unit 33 at predetermined intervals (step ST10). This packet includes position information substantially corresponding to the execution position of the pedestrian support control, such as position information of the traffic signal controller 3, and graphic information of the intersection J.

When receiving the broadcast packet, the portable terminal 5 executes an approach determination process for determining whether or not the traffic signal controller 3 has been approached using the position information included in the packet (step ST11).
Specifically, the mobile terminal 5 calculates the distance between the position information included in the received packet and its current position, and determines whether this distance is equal to or less than a predetermined threshold. If the mobile terminal 5 is equal to or smaller than the threshold, it is determined that the mobile terminal 5 is approaching, and executes the next input reception process (step ST12).

In this way, when the determination result of the approach determination process is affirmative, if the input reception process is executed, the range in which the pedestrian 4 can execute the input operation in the crossing direction is set in the traffic signal controller 3. It can be limited to the vicinity.
Therefore, even in the case of the traffic signal controller 3 that employs the communication unit 33 having a relatively wide communication range, the traffic signal controller 3 performs the pedestrian support control at an appropriate timing when the pedestrian 4 approaches the pedestrian crossing. Can start.

The input receiving process is a process of receiving a crossing direction input operation on the mobile terminal 5 by the pedestrian 4. The input receiving process is performed by displaying, on the display unit 54, image data generated from the graphic information of the intersection J, for example, as shown in the display screen 58 of FIG.
Thereafter, when the pedestrian 4 inputs the crossing direction by a touch operation on the display screen 58 or the like, the mobile terminal 5 transmits a control packet for assistance request to the traffic signal controller 3 (step ST13).

The support request control packet includes the crossing direction (type of the first direction or the second direction) designated by the pedestrian 4 and the mobile ID of the mobile terminal 5.
When the traffic signal controller 3 receives the support request control packet, the traffic signal controller 3 performs pedestrian support control according to the crossing direction included in the packet (step ST14). That is, when the first direction is designated, the pedestrian blue PG in the first direction is extended, and when the second direction is designated, the pedestrian blue PG in the second direction is extended.

Next, the traffic signal controller 3 calculates the signal information after extending the pedestrian green time in the first direction or the second direction every predetermined time, and sets the pedestrian packet including the calculated signal information for the predetermined time. Every time, it transmits to the portable terminal 5 (step ST15).
This pedestrian packet includes signal information such as a blue waiting time and a blue remaining time for each of the first direction and the second direction before and after crossing support.

When the mobile terminal 5 receives the pedestrian packet, the mobile terminal 5 performs an information providing process for providing the pedestrian 4 with the signal information included in the packet (step ST16).
The information providing process is performed, for example, by displaying the blue waiting time and the blue remaining time for each of the first direction and the second direction before and after crossing support on the display unit 54 (see FIGS. 7 and 8). ).

[Second communication procedure]
FIG. 11 is a sequence diagram showing another example (second communication procedure) of the communication procedure between the traffic signal controller 3 and the mobile terminal 5 constituting the pedestrian support system.
The communication procedure of FIG. 11 is a communication procedure suitable for the case where the communication unit 33 of the traffic signal controller 3 communicates with the mobile terminal 5 in a relatively narrow range by Bluetooth or the like.

Here, it is assumed that the communication unit 33 of the traffic signal controller 3 includes communication interfaces with relatively narrow communication ranges (for example, within 10 m) installed at the four corner points P1 to P4 of the intersection J, respectively.
Therefore, when the mobile terminal 5 of the pedestrian 4 can receive a packet from the communication unit 33, the pedestrian 4 is located in the vicinity of any of the points P1 to P4 at the four corners of the intersection J (for example, within 10 m). I can judge.

As shown in FIG. 11, the traffic signal controller 3 transmits a broadcast packet from the communication unit 33 every predetermined time (step ST20). This packet includes blue waiting time and blue remaining time in each of the first direction and the second direction before crossing support, graphic information of the intersection J, and the like.
As described above, if the mobile terminal 5 receives the packet, it can be considered that the pedestrian 4 is located in the vicinity of any of the points P1 to P4, so the mobile terminal 5 does not perform the approach determination process.

When the mobile terminal 5 receives the broadcast packet, the mobile terminal 5 performs a first information providing process for providing the pedestrian 4 with the signal information included in the packet (step ST21).
The first information providing process is performed, for example, by displaying the blue waiting time and the blue remaining time for each of the first direction and the second direction before crossing support on the display unit 54 (see FIG. 9). That is, in the first information provision processing stage, signal information after crossing support is not provided, so only signal information before crossing support is provided to the pedestrian 4.

  Next, when the pedestrian 4 inputs the crossing direction by a touch operation on the display screen 58 or the like, the portable terminal 5 transmits a support request control packet to the traffic signal controller 3 (step ST22).

The support request control packet includes the crossing direction (type of the first direction or the second direction) designated by the pedestrian 4 and the mobile ID of the mobile terminal 5.
Upon receiving the support request control packet, the traffic signal controller 3 performs pedestrian support control according to the crossing direction included in the packet (step ST23). That is, when the first direction is designated, the pedestrian blue PG in the first direction is extended, and when the second direction is designated, the pedestrian blue PG in the second direction is extended.

Next, the traffic signal controller 3 calculates the signal information after extending the pedestrian green time in the first direction or the second direction every predetermined time, and sets the pedestrian packet including the calculated signal information for the predetermined time. Every time, it transmits to the portable terminal 5 (step ST24).
This pedestrian packet includes signal information such as a blue waiting time and a blue remaining time for each of the first direction and the second direction after crossing support.

When the mobile terminal 5 receives the pedestrian packet, the mobile terminal 5 performs a second information providing process for providing the pedestrian 4 with the signal information included in the packet (step ST25).
The second information provision processing includes, for example, the first direction after the newly acquired crossing support and the blue waiting time and the remaining blue time for each of the first direction and the second direction before the crossing support already displayed. This is performed by displaying the blue waiting time and the remaining blue time in the second direction on the display unit 54 (see FIGS. 7 and 8).

[Reduction of blue waiting time (red time reduction)]
In the above-described embodiment, assuming that the pedestrian 4 is a handicapped person or an elderly person, a request for assistance from the portable terminal 5 with designation of the crossing direction is requested to extend the pedestrian blue time in the designated direction. It is regarded as a command (first support).
However, regardless of the attribute of the pedestrian 4, reducing the red time in the direction in which the pedestrian 4 wants to cross can be said to be crossing support for the pedestrian 4 in a broad sense.

Therefore, when the traffic signal controller 3 receives a support request including the crossing direction designated by the pedestrian 4 from the portable terminal 5, the blue waiting time is shortened (red time shortening) for the designated crossing direction. It may be done (second support).
In this case, for example, depending on the reception timing of the support request including the crossing direction, it may be determined whether the instruction is to request support for shortening the blue waiting time or extending the pedestrian blue time.

  That is, for example, when a support request designating the first direction is received and the first direction at the time of reception is in a blue waiting state, it is regarded as a command requesting support for reducing the blue waiting time, The blue waiting time in one direction may be shortened (for example, the pedestrian blue time in the second direction is shortened).

  Conversely, when a support request designating the first direction is received and the first direction at the time of reception is pedestrian blue, it is regarded as a command requesting support for extending the remaining blue time, You only need to extend the pedestrian green time in the direction.

Further, not only the type of the transverse direction but also the type of the blue extension request or the red shortening request is input to the portable terminal 5, and the combination of the kind of the transverse direction included in the support request and the type of the blue extension request or the red shortening request is made. Accordingly, the traffic signal controller 3 may perform pedestrian support control.
In this case, for example, when there is a support request for designating the first direction and designating the blue extension request, the traffic signal controller 3 is configured at a predetermined timing at which the pedestrian blue in the first direction can be extended. What is necessary is just to extend pedestrian blue of 1 pedestrian.

As is clear from the above description, the traffic signal controller 3 of the present embodiment can execute the crossing support including at least one of the first support and the second support defined below, and is received by the communication unit 33. What is necessary is just to perform 1st assistance or 2nd assistance with respect to the crossing direction (crossing direction which the pedestrian 4 designates).
First support: Extension of pedestrian green time for the crossing direction selected by pedestrian 4 Second support: Reduction of blue waiting time for the crossing direction selected by pedestrian 4

[Judgment process of the optimal crossing order at the second crossing]
FIG. 12 is an explanatory diagram showing a determination process of the optimal crossing order at the time of two crossings.
“Twice twice” means that the pedestrian 4 needs to cross the intersection J twice in order to reach the destination. Here, since the pedestrian 4 goes from the point P1 to the point P3, a case is assumed in which one of the first route P1 → P2 → P3 and the second route P1 → P4 → P3 can be selected.

The definitions of the variables Wij and Cij shown in FIG. 12 are as follows.
Wij: “Blue waiting time” at the point Pj when going from the point Pi to the point Pj
Cij: “Necessary time for crossing” required for crosswalk from point Pi to point Pj
Here, the storage unit 53 of the portable terminal 5 includes the walking speed Vp of the pedestrian 4 (which may be a set value or a measured value), and the crossing distances in the first direction and the second direction provided from the traffic signal controller 3. It is assumed that Da and Db (see FIG. 1) are stored.

Therefore, the control unit 51 of the portable terminal 5 can calculate the necessary crossing times C12, C23, C14, and C43 by the following equation.
C14 = C23 = Da / Vp
C12 = C43 = Db / Vp

Further, it is assumed that the signal information acquired from the traffic signal controller 3 includes the scheduled number of seconds of the next cycle step. Therefore, the control unit 51 of the mobile terminal 5 can calculate future blue waiting times W12, W23, W14, and W43 that occur at the respective points P1, P2, and P4. Therefore, the control unit 51 calculates the passage time of the first route and the second route by the following equation.
Passage time of the first route ΣT1 = W12 + C12 + W23 + C23
Passage time of the second route ΣT2 = W14 + C14 + W43 + C43

Thereafter, the control unit 51 compares the magnitudes of ΣT1 and ΣT2, and when ΣT1 <ΣT2, provides the pedestrian 4 with the traversing order of the first route of P1 → P2 → P3 as the recommended order.
In addition, when ΣT1> ΣT2, the control unit 51 provides the pedestrian 4 with the traversing order of the second route of P1 → P4 → P3 as the recommended order.

In this way, the control unit 51 of the mobile terminal 5 determines the crossing order based on the blue waiting time that can occur in the crossing route when crossing the intersection J twice and the required crossing time required for walking on the crossing route. If the determination process is performed and the determination result is provided to the pedestrian 4, the pedestrian 4 can detect in advance which crossing order is advantageous.
Therefore, useful information can be provided to the pedestrian 4 who needs to cross the intersection J twice.

When the maximum extension times Tma and Tmb described later that can be applied to the pedestrian blue PG in the first direction and the second direction are known, the control unit 51 of the portable terminal 5 sets the maximum extension times Tma and Tmb. It is preferable to exclude from the selection target a crossing order that includes more than one crosswalk.
If it does in this way, it can prevent that the crossing order which the pedestrian 4 cannot cross is provided as a recommended order.

In addition, when caution information (hazard information that may hinder walking), which will be described later, is received from the traffic signal controller 3, the control unit 51 of the mobile terminal 5 crosses the lane corresponding to the caution information. It is preferable to exclude the crossing order including the sidewalk from the selection target.
In this way, it is possible to prevent a traversing order that may hinder walking from being provided as a recommended order.

[Process for determining the optimal walking route that crosses multiple intersections]
FIG. 13 is an explanatory diagram showing an optimal walking route determination process when crossing a plurality of intersections J1 and J2.
Here, since the pedestrian 4 goes from the point P1 of the intersection J1 to the point P5 of the adjacent intersection J2, it is assumed that one of the following four types of routes can be selected.

First route: P1 → P2 → P3 → P4 → P5
Second route: P1 → P8 → P3 → P4 → P5
Third route: P1 → P8 → P7 → P4 → P5
Fourth route: P1 → P8 → P7 → P6 → P5

The definitions of the variables Wij, Cij, and Dmn shown in FIG. 13 are as follows.
Wij: “Blue waiting time” at the point Pj when going from the point Pi to the point Pj
Cij: “Necessary time for crossing” required for crosswalk from point Pi to point Pj
Dmn: Necessary for walking on the sidewalk from point Pm to point Pn
As described above, if the mobile terminal 5 stores the walking speed Vp of the pedestrian 4 (which may be a set value or a measured value) and the crossing distances Da and Db (see FIG. 1) of the intersections J1 and J2. The control unit 51 of the mobile terminal 5 can calculate the required crossing time Cij and the required walking time Dmn.

  In addition, it is assumed that the signal information acquired from the traffic signal controller 3 at the intersection J1 includes the scheduled number of steps for the intersection J2. Therefore, the control unit 51 of the mobile terminal 5 can calculate the future blue waiting time Wij that occurs at each point P1, P2, P4, P8, P7, P6. Therefore, the control unit 51 calculates the travel time of the first route to the fourth route by the following equation.

Route 1 transit time ΣT1 = (W12 + C12) + (W23 + C23) + D34 + (W45 + C45)
Route 2 travel time ΣT2 = (W18 + C18) + (W83 + C83) + D34 + (W45 + C45)
Route 3 transit time ΣT3 = (W18 + C18) + D87 + (W74 + C74) + (W45 + C45)
Route 4 travel time ΣT4 = (W18 + C18) + D87 + (W76 + C76) + (W65 + C65)
Thereafter, the control unit 51 selects a walking route that minimizes ΣT1 to ΣT4, and provides the walking route to the pedestrian 4 as a recommended route.

Thus, if the control part 51 of the portable terminal 5 performs the determination process of the optimal walking route based on the signal scheduled time of several intersection J1, J2, and provides a determination result to the pedestrian 4, it will walk The person 4 can know in advance which walking route is advantageous.
Therefore, it is possible to provide useful information to the pedestrian 4 who adopts a walking route that crosses the plurality of intersections J1 and J2.

In addition, in the determination process of the optimal walking route crossing a plurality of intersections, when maximum extension times Tma and Tmb described later that can be applied to the pedestrian blue PG of each intersection J1 and J2 are known, It is preferable that the control part 51 of the portable terminal 5 excludes the walking route including the pedestrian crossing exceeding the maximum extension times Tma and Tmb from the selection target.
In this way, it is possible to prevent a walking route including a pedestrian crossing that the pedestrian 4 cannot cross from being provided as a recommended route.

In addition, when caution information (hazard information that may hinder walking), which will be described later, is received from the traffic signal controller 3, the control unit 51 of the mobile terminal 5 crosses the lane corresponding to the caution information. It is preferable to exclude a walking route including a sidewalk from selection targets.
In this way, it is possible to prevent a walking route including a pedestrian crossing that may hinder walking from being provided as a recommended route.

[First Modification]
In the above-described embodiment, the traffic signal controller 3 may include the distances Da and Db in the first direction and the second direction in the packet broadcast to the mobile terminal 5.
In this case, the control unit 51 of the portable terminal 5 and the crossing directions Da and Db acquired from the traffic signal controller 3 and the walking speed Vp stored in advance in the storage unit 51 of the own device (may be a set value or a measured value). , The required crossing times Ca and Cb in each direction can be calculated by the following equations.

Time required for crossing in the first direction Ca = Da / Vp
Time required for traversing in the second direction Cb = Db / Vp
Moreover, when the control part 51 of the portable terminal 5 calculates crossing required time Ca, Cb, it is preferable to include the information in the control packet of a support request, and to notify the traffic signal controller 3.

In this way, the control unit 31 of the traffic signal controller 3 uses the required crossing times Ca and Cb notified from the portable terminal 5 to request the support request for the set blue times Tpa and Tpb of the pedestrian blue PG. It can determine dynamically for every transmitted pedestrian 4.
Therefore, flexible pedestrian support control according to the walking speed of the pedestrian 4 can be executed as compared with the case where the set blue times Tpa and Tpb of the pedestrian blue PG are fixed values.

[Second Modification]
In the above-described embodiment, the traffic signal controller 3 transmits the packet broadcast to the portable terminal 5 to the first and second crossing distances Da and Db and the first and second pedestrian blue PG. The maximum extension times Tma and Tmb that can be applied may be included.
In this case, the control unit 51 of the mobile terminal 5 can provide information on whether or not the pedestrian 4 can cross based on the maximum extension times Tma and Tmb acquired from the traffic signal controller 3 and the above-described required crossing times Ca and Cb. It becomes like this.

That is, with respect to the first direction, the control unit 51 of the portable terminal 5 compares the remaining blue time when the maximum extension time Tma is applied with the required crossing time Ca, and when Tma <Ca, the control unit 51 proceeds to the first direction. Is displayed on the display unit 54 or the speaker 55.
Further, the control unit 51 of the portable terminal 5 compares the remaining blue time when the maximum extension time Tmb is applied with the required crossing time Cb in the second direction, and when Tmb <Cb, the control proceeds to the second direction. Is displayed on the display unit 54 or the speaker 55.

  In this way, a pedestrian 4 having a relatively slow walking speed Vp, such as a disabled person or an elderly person, can detect in advance a crossing direction that cannot pass in time at his / her own walking speed Vp. Can provide useful information for traffic safety.

[Third Modification]
In the above-described embodiment, when the storage unit 53 of the mobile terminal 5 stores the attribute information of the pedestrian 4 in advance, the control unit 51 of the mobile terminal 5 includes the attribute information in the control packet of the support request. You may decide.
Here, the attribute information of the pedestrian 4 refers to information for identifying an attribute of the pedestrian 4 to be subjected to pedestrian support control, such as a disabled person, an elderly person, a schoolchild, and a woman with an infant. .

And when the control part 31 of the traffic signal controller 3 acquires attribute information from the portable terminal 5 when performing pedestrian assistance control, the attribute information may be included in the vehicle packet and broadcast. preferable.
In this way, it is possible to provide the vehicle driver with information such as “the handicapped is passing a pedestrian crossing” using the vehicle navigation device, etc., and provide the vehicle with information that leads to safe driving. Can do.

[Fourth Modification]
In the above-described embodiment, when the storage unit 34 of the traffic signal controller 3 stores the caution information regarding the crossing of the intersection J, the control unit 31 of the traffic signal controller 3 transmits the caution information to the mobile terminal 5. It may be included in the broadcast packet.
Caution information about crossing refers to hazard information that may hinder walking such as when there is a step in the pedestrian crossing or there is a tram track during the construction of the pedestrian crossing.

  If the above attention information is transmitted to the mobile terminal 5, the control unit 51 of the mobile terminal 5 provides the caution information acquired from the traffic signal controller 3 to the pedestrian 4 in advance, so that it is safe when walking. The pedestrian 4 can be selected in advance in the crossing direction.

[Fifth Modification]
In the above-described embodiment, when it can be estimated that the pedestrian 4 has lost the willingness to cross the pedestrian crossing, such as when the mobile terminal 5 detects that the mobile terminal 5 has moved away from the intersection J after receiving the control request request packet, You may decide to cancel the roadside pedestrian support control.
In this way, it is possible to prevent unnecessary shortening of the green time in the crossing direction by executing the crossing support that has become unnecessary as it is.

Further, when the control unit 31 of the traffic signal controller 3 executes the extension of the pedestrian blue PG in the first direction or the second direction, it determines the completion of the crossing of the pedestrian crossing in the extended direction, and determines that the crossing is completed. At that time, the extended pedestrian blue PG may be discontinued.
In this way, it is possible to prevent wasteful reduction of the blue time in the crossing direction due to unnecessary extension of the pedestrian blue PG.

  Each of the above processes requires the traffic signal controller 3 to detect the current position of the mobile terminal 5. The current position of the mobile terminal 5 can be measured, for example, by transmitting the position information of the mobile terminal 5 to the traffic signal controller 3 every predetermined time.

[Other variations]
The embodiments disclosed herein are illustrative and non-restrictive in every respect. The scope of rights of the present invention is not limited to the above-described embodiments, but includes all modifications within the scope equivalent to the configurations described in the claims.

For example, in the above-described embodiment, the case of a crossroad intersection (see FIG. 1) is illustrated, but the pedestrian support system of the present embodiment is applied to an intersection having a structure other than a crossroad such as a T-shaped intersection or a scramble intersection. You can also.
Moreover, in the above-mentioned embodiment, you may decide to accommodate the communication part 33 and the control part 31 of the traffic signal controller 3 in a separate housing | casing.

DESCRIPTION OF SYMBOLS 1A Vehicle lamp 1B Vehicle lamp 2A Pedestrian lamp 2B Pedestrian lamp 3 Traffic signal controller 4 Pedestrian 5 Portable terminal 31 Control part 32 Lamp drive part 33 Communication part 34 Memory | storage part 35 Clock part 51 Control part 51 Storage unit 52 Communication unit 53 Storage unit 54 Display unit 55 Speaker 56 Operation unit 57 Support application (computer program)
58 Display screen 59A Arrow 59B Arrow J Intersection

Claims (21)

A traffic signal controller that performs crossing support for pedestrians,
A communication unit that receives a crossing direction selected by the pedestrian from a plurality of crossing directions at an intersection from the mobile terminal of the pedestrian;
Crossing support including at least one of a first support and a second support defined below can be executed for a plurality of crossing directions at the intersection, and the crossing support is received for the crossing direction received by the communication unit. A traffic signal controller comprising:
First support: Extension of pedestrian green time for the crossing direction selected by the pedestrian Second support: Reduction of blue waiting time for the crossing direction selected by the pedestrian The control unit calculates signal information including a blue waiting time and a blue remaining time for at least the received crossing direction among the plurality of crossing directions of the intersection;
The traffic signal controller according to claim 1, wherein the communication unit transmits the calculated signal information to the mobile terminal.   The traffic signal controller according to claim 2, wherein the signal information calculated by the control unit includes signal information based on the number of step seconds before the crossing support is executed.   The traffic signal controller according to claim 2 or 3, wherein the signal information calculated by the control unit includes signal information based on the number of step seconds after the crossing support is executed.   The traffic signal controller according to any one of claims 1 to 4, wherein the communication unit transmits a pedestrian blue maximum extension time for each of a plurality of crossing directions of the intersection to the mobile terminal.   The traffic signal controller according to any one of claims 1 to 5, wherein the communication unit transmits a crossing distance for each of a plurality of crossing directions of the intersection to the mobile terminal.   The traffic signal controller according to any one of claims 1 to 6, wherein the communication unit transmits attention information regarding crossing of each of a plurality of crossing directions of the intersection to the mobile terminal. The communication unit receives from the mobile terminal the time required for crossing in the crossing direction necessary for the pedestrian to pass a pedestrian crossing,
The traffic signal control according to any one of claims 1 to 7, wherein the control unit calculates a pedestrian green time to be extended in the first support according to the received required crossing time for each crossing direction. Machine.   The said control part determines the completion of crossing of the said pedestrian from the present position of the said portable terminal when performing the said 1st assistance, and stops pedestrian blue when it determines with crossing completion. 8. The traffic signal controller according to any one of 8 items.   The traffic signal controller according to any one of claims 1 to 9, wherein the communication unit transmits position information of the own device to the mobile terminal. The communication unit receives the attribute information of the pedestrian from the mobile terminal,
The traffic signal controller according to claim 1, wherein the control unit causes the communication unit to transmit the received attribute information as provision information for a vehicle. A computer program of a portable terminal that wirelessly communicates with a traffic signal controller that performs pedestrian crossing support,
A step in which the control unit of the mobile terminal accepts an input operation to the touch panel type display unit in which a pedestrian carrying the mobile terminal selects one from a plurality of crossing directions at an intersection;
The communication unit of the mobile terminal transmits the selected crossing direction to the traffic signal controller;
The communication unit of the mobile terminal receives from the traffic signal controller signal information including a blue waiting time and a blue remaining time for at least the crossing direction selected by the pedestrian among a plurality of crossing directions of the intersection. When,
And a step of providing the signal information received by the control unit of the mobile terminal to the pedestrian. The control unit of the portable terminal executes a process of determining approach to the traffic signal controller based on the current position of the own device and the position information of the traffic signal controller;
The computer program according to claim 12, further comprising: a process of accepting the input operation when the control unit of the mobile terminal detects the approach. The communication unit of the mobile terminal receives a maximum extension time of the pedestrian blue for each of a plurality of crossing directions at the intersection from the traffic signal controller,
14. The computer program according to claim 12, further comprising: a step of determining whether or not crossing in each crossing direction is possible based on the received maximum extension time. The control unit of the mobile terminal calculates a necessary crossing time required for the pedestrian to pass a pedestrian crossing for each crossing direction;
The computer program according to any one of claims 12 to 14, further comprising: a communication unit of the mobile terminal transmitting the calculated required crossing time for each crossing direction to the traffic signal controller. . The communication unit of the mobile terminal receives a maximum extension time of the pedestrian blue for each of a plurality of crossing directions at the intersection from the traffic signal controller,
Based on the blue waiting time that can be generated in the crossing route when the control unit of the mobile terminal crosses the intersection twice, the necessary crossing time required for walking along the crossing route, and the received maximum extension time Determining a crossing order when crossing the intersection twice;
The computer program according to any one of claims 12 to 15, further comprising: a control unit of the mobile terminal providing the determined traversing order to the pedestrian. The communication unit of the mobile terminal receiving caution information about crossing for each of a plurality of crossing directions at the intersection from the traffic signal controller;
The computer program according to claim 16, further comprising: a step in which the control unit of the mobile terminal further determines the traversing order using the received attention information. A computer program of a portable terminal that wirelessly communicates with a traffic signal controller that performs pedestrian crossing support,
A step in which a control unit of the mobile terminal receives an input operation in which a pedestrian carrying the mobile terminal selects one of a plurality of crossing directions at an intersection; and
The communication unit of the mobile terminal transmits the selected crossing direction to the traffic signal controller;
The communication unit of the mobile terminal receives from the traffic signal controller signal information including a blue waiting time and a blue remaining time for at least the crossing direction selected by the pedestrian among a plurality of crossing directions of the intersection. When,
The control unit of the mobile terminal provides the received signal information to the pedestrian,
The communication unit of the mobile terminal receives a maximum extension time of the pedestrian blue for each of a plurality of crossing directions at the intersection from the traffic signal controller,
And a step of determining whether or not crossing is possible for each crossing direction based on the received maximum extension time. A computer program of a portable terminal that wirelessly communicates with a traffic signal controller that performs pedestrian crossing support,
A step in which a control unit of the mobile terminal receives an input operation in which a pedestrian carrying the mobile terminal selects one of a plurality of crossing directions at an intersection; and
The communication unit of the mobile terminal transmits the selected crossing direction to the traffic signal controller;
The communication unit of the mobile terminal receives from the traffic signal controller signal information including a blue waiting time and a blue remaining time for at least the crossing direction selected by the pedestrian among a plurality of crossing directions of the intersection. When,
The control unit of the mobile terminal provides the received signal information to the pedestrian,
The control unit of the mobile terminal calculates a necessary crossing time required for the pedestrian to pass a pedestrian crossing for each crossing direction;
And a communication unit of the mobile terminal transmitting the calculated required crossing time for each crossing direction to the traffic signal controller. A computer program of a portable terminal that wirelessly communicates with a traffic signal controller that performs pedestrian crossing support,
A step in which a control unit of the mobile terminal receives an input operation in which a pedestrian carrying the mobile terminal selects one of a plurality of crossing directions at an intersection; and
The communication unit of the mobile terminal transmits the selected crossing direction to the traffic signal controller;
The communication unit of the mobile terminal receives from the traffic signal controller signal information including a blue waiting time and a blue remaining time for at least the crossing direction selected by the pedestrian among a plurality of crossing directions of the intersection. When,
The control unit of the mobile terminal provides the received signal information to the pedestrian,
The communication unit of the mobile terminal receives a maximum extension time of the pedestrian blue for each of a plurality of crossing directions at the intersection from the traffic signal controller,
Based on the blue waiting time that can occur in the crossing route when the control unit of the mobile terminal crosses the intersection twice, the required crossing time required for walking on the crossing route, and the received maximum extension time Determining a crossing order when crossing the intersection twice;
And a step of providing the pedestrian with the determined traversing order by the control unit of the portable terminal. The communication unit of the mobile terminal receiving caution information about crossing for each of a plurality of crossing directions at the intersection from the traffic signal controller;
The computer program according to claim 20, further comprising: a step in which the control unit of the mobile terminal further determines the traversing order using the received attention information.

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