JP6725980B2 - Information device, control method, program, and storage medium - Google Patents

Description

The present invention relates to vehicle traffic control.

Conventionally, a technique for smoothing traffic is known. For example, Patent Document 1 discloses a travel support device that wirelessly acquires start notification information for predicting a start from a vehicle stopped ahead of itself and outputs a warning or the like based on the acquired start notification information. There is.

JP, 2008-228378, A

When general vehicles or physical distribution trucks are simply stopped on the road, traffic control by people or simple traffic lights is often not performed. Therefore, passing a stopped vehicle in an oncoming lane may be dangerous. On the other hand, Patent Document 1 does not disclose any overtaking in consideration of the presence of an oncoming vehicle.

The present invention has been made to solve the above problems, and a main object of the present invention is to provide an information device capable of promoting smooth traffic of a vehicle.

The invention according to claim 1 is an information device that moves with a vehicle and transmits traffic control information for smoothing traffic of surrounding vehicles, and whether the vehicle is parked on a one-lane road on one side. A parking determination unit that determines whether or not the vehicle is behind the first lane, which is a lane in which the vehicle is parked when the parking determination unit determines that the vehicle is parked, and the first lane An information transmission unit for transmitting traffic control information for organizing traffic of an oncoming vehicle existing in an oncoming lane, the traffic control information urging a stop to one of the rear vehicle and the oncoming vehicle. And

The invention according to claim 6 is a control method executed by an information device that moves with a vehicle and transmits traffic control information for smoothing traffic of surrounding vehicles, wherein the vehicle is parked on a one-lane road on one side. A parking determination step of determining whether the vehicle is in the middle, a rear vehicle existing behind the first lane that is the lane in which the vehicle is parked when it is determined to be parked by the parking determination step, and An information transmitting step of transmitting traffic control information for organizing traffic of an oncoming vehicle existing in an oncoming lane of the first lane, the traffic control information urging a stop to one of the rear vehicle and the oncoming vehicle ; It is characterized by having.

The invention according to claim 7 is a program executed by a computer of an information device that moves with a vehicle and transmits traffic control information that facilitates traffic of surrounding vehicles, wherein the vehicle is on a one-lane road on one side. A parking determination unit that determines whether or not the vehicle is parked, a rear vehicle that is present behind the first lane that is the lane in which the vehicle is parked when the parking determination unit determines that the vehicle is parked, and As an information transmitting unit for transmitting traffic control information for rearranging traffic of an oncoming vehicle existing in an oncoming lane of the first lane, the traffic rearranging information urging a stop to one of the rear vehicle and the oncoming vehicle. It is characterized in that the computer is operated.

1 shows a schematic configuration of a display system. It is a block diagram of a display system. It is a figure which shows the positional relationship of both the road parking which was parked in parallel. It is a functional block diagram regarding transmission/reception of traffic control information. An overhead view of the target road is shown. A specific example of the data structure of traffic control information is shown. It is a flowchart of a transmission process of traffic control information. It is a display example by a display system. The bird's-eye view of the road parking which is parked in parallel is shown.

In a preferred embodiment of the present invention, an information device that transmits traffic control information that travels with a vehicle and facilitates traffic of surrounding vehicles, the information generation unit generating the traffic control information; An information transmission unit that transmits traffic control information. Here, the “traffic control information” is information that facilitates traffic of surrounding vehicles, and is information that is handled by inter-vehicle communication already defined in the Japan ITS Promotion Forum (for example, vehicle speed, acceleration, position of own vehicle). It does not include information about the vehicle such as). According to this aspect, the information device can preferably realize smoothing of traffic of surrounding vehicles.

In one mode of the above information device, the information transmission unit transmits the traffic control information when the shift range of the vehicle is a stop range and/or when a hazard lamp of the vehicle is blinking. According to this aspect, it is possible to favorably facilitate smoothing of traffic of the vehicle overtaking the stopped own vehicle.

In another aspect of the above information device, the information device is a vehicle total length acquisition unit that acquires the total length of the vehicle, and an inter-vehicle distance acquisition that acquires an inter-vehicle distance between the vehicle and another vehicle existing in front of the vehicle. And a distance information acquisition unit that acquires distance information indicating the total length of the other vehicle and the inter-vehicle distance, the information transmission unit, the total length of the vehicle and the inter-vehicle distance with the other vehicle, The traffic control information is transmitted when the total length and the inter-vehicle distance indicated by the distance information are equal to or greater than a predetermined length. According to this aspect, when the width of the row of both the road parking including the own vehicle is equal to or greater than the predetermined length that requires attention to pass, the traffic control information can be preferably transmitted to facilitate the traffic.

In another aspect of the information device, the information device further includes a driver detection unit that detects whether or not a driver of the vehicle is present inside the vehicle, and the information transmission unit is configured to detect the vehicle interior by the driver detection unit. When it is detected that the driver does not exist, the traffic control information is transmitted. According to this aspect, the information device can facilitate another vehicle overtaking the own vehicle in which the driver is absent.

In another aspect of the information device, the information device further includes a failure detection unit that detects a failure of the vehicle, and the information transmission unit transmits the traffic control information when the failure of the vehicle is detected. .. According to this aspect, the information device can facilitate another vehicle passing an own vehicle stopped due to a failure.

In another aspect of the information device, the information device further includes an operation unit, and the information transmission unit transmits the traffic control information when detecting a predetermined input by the operation unit. According to this aspect, the information device can transmit the traffic control information at any timing specified by the user.

In another aspect of the information device, the information transmission unit transmits, as the traffic control information, information on a direction along a road on which the vehicle is present and information on whether or not to stop in the direction. To do. According to this aspect, it is possible to accurately give a traffic control instruction to another vehicle that has received the traffic control information.

In another aspect of the above information device, the information transmitting unit may associate information indicating that the vehicle should be stopped with information about the direction of travel of the vehicle, and may move to information about the direction of the vehicle opposite to the direction of travel. Or the information indicating that the vehicle is advancing, and the information indicating that the vehicle should stop in the direction opposite to the traveling direction of the vehicle. Associate. Accordingly, the information device can perform traffic control so as to reliably prevent a vehicle traveling in the rear from colliding with an oncoming vehicle.

In another aspect of the information device, the information device includes an information receiving unit that receives traffic control information including the azimuth information and the stop necessity information from another vehicle, and an azimuth in a traveling direction of the vehicle. And a display unit that displays whether or not the vehicle needs to be stopped based on the information about whether or not to stop the vehicle, which is associated with the information of the azimuth that matches the direction. According to this aspect, when the information device receives the traffic control information, the information device can cause the driver to drive in accordance with the traffic control information.

In another aspect of the information device, the information transmission unit does not transmit the traffic control information when the vehicle is approaching a traffic signal within a predetermined distance. According to this aspect, the information device can allow another vehicle to preferentially comply with the display of the traffic light.

In another aspect of the information device, the traffic control information is transmitted only when the vehicle is parked on the one-lane one-lane road. According to this aspect, the information device can appropriately transmit the traffic control information when traffic control is required.

In another preferred embodiment of the present invention, there is provided a control method executed by an information device that moves with a vehicle and transmits traffic control information that facilitates traffic of surrounding vehicles, the information generating the traffic control information. It has a generation process and an information transmission process of transmitting the traffic control information. The information device can smooth the traffic of surrounding vehicles by executing this control method.

In another preferred embodiment of the present invention, the program is executed by a computer of an information device that transmits traffic control information that travels with a vehicle and facilitates traffic of surrounding vehicles, and generates the traffic control information. The computer is caused to function as an information generation unit and an information transmission unit that transmits the traffic control information. The computer can smooth the traffic of surrounding vehicles by executing this program. Preferably, the program is stored in a storage medium.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

[Display system configuration]
FIG. 1 is a schematic configuration diagram of the display system 1. As shown in FIG. 1, a display system 1 according to the present embodiment is a head-up display, and mainly includes a light source unit 4, a communication unit 5 that performs inter-vehicle communication, a screen 7, and a combiner 8. , And a front window 25, a ceiling portion 27, a hood 28, and a dashboard 29.

The light source unit 4 is provided in the dashboard 29 and emits light (also simply referred to as “display light”) forming a display image toward the screen 7 provided in the dashboard 29. In this case, the display light reflected by the screen 7 reaches the combiner 8 via the opening 89 provided in the dashboard 29, and further reaches the combiner 8 to reach the driver's eyes. In this way, the light source unit 4 causes the display light to reach the position of the eyes of the driver and causes the driver to visually recognize the virtual image “Iv”. The light source unit 4 may receive information and the like necessary to generate an image serving as a display image by communicating with a navigation device (not shown).

The screen 7 is a reflective optical member that produces an intermediate image, and functions as an exit pupil expander (EPE). The screen 7 has, for example, a microlens array in which a plurality of microlenses are arranged on a surface on which light from the light source unit 4 is incident, and a reflection surface is formed on a surface opposite to the microlens array. It

The combiner 8 is an optical member that allows the observer to visually recognize the virtual image Iv by projecting the light that forms the intermediate image generated on the screen 7 and partially reflecting the projected light to the position of the eyes of the driver. is there. Preferably, the display light reflection surface of the combiner 8 has a substantially concave shape. As a result, the combiner 8 causes the virtual image Iv to be enlarged and displayed.

FIG. 2 is a block diagram of the display system 1. As shown in FIG. 2, the light source unit 4 includes a control unit 41, a light source unit 42, and a scanning unit 43, and includes sensors including an external sensor such as a camera and a lidar and an internal sensor such as a GPS receiver. Connected to Group 6.

The control unit 41 includes a CPU, a ROM that stores control programs and data executed by the CPU, a RAM that sequentially reads and writes various data as a work memory when the CPU operates, and the like. Take control. For example, the control unit 41 generates an image to be displayed and causes the light source unit 42 to emit the display light of the generated image. Further, the control unit 41 generates information (also referred to as “traffic control information IT”) for organizing traffic of vehicles passing through the one-lane one-lane road when the vehicle is parked on the one-lane one-lane road and communicates. It is transmitted to a running vehicle by inter-vehicle communication via the unit 5. The control unit 41 may be provided outside the light source unit 4. The control unit 41 includes the “information generation unit”, the “information transmission unit”, the “vehicle full length acquisition unit”, the “inter-vehicle distance acquisition unit”, the “distance information acquisition unit”, the “information reception unit”, and the program according to the present invention. It is an example of a computer that executes.

The light source unit 42 has, for example, red, blue, and green laser light sources, and emits display light under the control of the control unit 41. The scanning unit 43 is, for example, a MEMS mirror, and gradually changes the reflection angle of the laser light incident from the light source unit 42 to reflect the laser light so as to scan the screen 7.

Although the case where the vehicle is equipped with the head-up display is illustrated in FIGS. 1-2, the configuration to which the present invention is applicable is not limited to this. Alternatively, the device that sends and receives the traffic control information IT may be any vehicle-mounted device that includes a display unit that displays a real image, such as a liquid crystal display. In this case, the above-described vehicle-mounted device has the communication unit 5, the sensor group 6, the control unit 41, and the like shown in FIG. 2, and performs processing relating to transfer of traffic control information IT described below. The display unit may be a center display or a cluster panel. In this case, the control unit 41 may be an ECU (Electric Control Unit) of the vehicle.

[Timing of generating traffic control information]
Next, the generation timing of the traffic control information will be described. In outline, the control unit 41 sets a predetermined threshold value for the length of the line formed by the on-road parked vehicles including the own vehicle (also referred to as “total road parking distance Ld”) during on-road parking on the one-lane one-sided road. (Also referred to as “threshold Ldth”.) In the above cases, the traffic control information IT is generated. In this case, the control unit 41 calculates the total road parking distance Ld, and therefore exchanges information indicating the total distance between the front road parking distance (also referred to as “front inter-vehicle length”) and the total length of the vehicle. , Car communication with other road parking vehicles.

Here, a method of determining whether or not the vehicle is being parked on the one-lane road on one side will be exemplified. The control unit 41 determines, for example, based on the map data including the road data and the current position identified from the output of the sensor group 6, whether or not the road exists on the one-lane one-lane road. In this case, the map data may be stored in advance in a storage unit (not shown), and is acquired by the communication unit 5 from an in-vehicle device in the same vehicle or a server device outside the vehicle that stores the map data. May be. In addition, the control unit 41 acquires information on whether or not the hazard lamp is blinking and information on the position of the shift lever by a communication protocol such as the vehicle and CAN (Controller Area Network), and the hazard lamp is blinking and the shift lever is in the parking state. When the vehicle is in the position, it is determined that the vehicle is parked without waiting for a signal (that is, parked on the road). Then, when it is determined that the vehicle is on the one-lane road on one side and the vehicle is parked on the road, the control unit 41 starts the calculation process of the road parking total distance Ld.

Next, the total on-street parking distance Ld will be described. FIG. 3 is a diagram showing a positional relationship between the road parking vehicles A to C that are lined up in a line on a target one-lane road (also referred to as “target road”) in parallel. Hereinafter, the vehicle in the front row of the on-street parking row is also simply referred to as the "leading vehicle", and the last vehicle is also referred to as the "last vehicle". The total distance between the total length of the host vehicle and the front inter-vehicle length (only the total length of the host vehicle in the case of the leading vehicle) is also referred to as "total length".

In the example of FIG. 3, the total length “Lt1” of the road parking vehicle A that is not the leading vehicle is the total length “Lv1” of the road parking vehicle A and the front inter-vehicle length that is the vehicle distance between the road parking vehicle A and the road parking vehicle B. Corresponding to the total distance with "Lb1", the total length "Lt2" of the road parking vehicle B is the total length "Lv2" of the road parking vehicle B and the inter-vehicle distance between the road parking vehicle B and the road parking vehicle C. This corresponds to the total distance with the inter-vehicle length “Lb2”. Further, since the road parking vehicle C is the leading vehicle, the total length “Lt3” of the road parking vehicle C corresponds to the total length “Lv3” of the road parking vehicle C. Therefore, in this case, the total road parking distance Ld corresponds to the total distance of the total lengths Lt1 to Lt3 of the road parking vehicles A to C. In the present embodiment, each of the road parking vehicles A to C calculates the total length of the own vehicle and notifies each other of the total length information (also referred to as “total length information IL”) corresponding to the own vehicle. , Total road parking distance Ld is calculated.

FIG. 4 is a functional block diagram relating to transmission/reception of traffic control information IT. FIG. 4 shows an oncoming vehicle D in which the road parking vehicles A to C travel in the oncoming lane of the parking lane and a vehicle E in the same lane in which the road parking vehicles A to C travel in the parked lane shown in FIG. An example of transmitting the traffic control information IT will be shown. Note that, in FIG. 4, for convenience of description, the functional blocks of only the road parking both A among the road parking both A to C are shown, but actually, the road parking both B and C are the same as the road parking both A. It has a functional block. As shown in FIG. 4, the control unit 41 functionally includes a vehicle total length holding unit 11, a front inter-vehicle length measurement unit 12, a total length calculation unit 13, another vehicle total length reception unit 15, and a road. It has a total parking distance calculation unit 16 and a traffic control information transmission determination unit 17. Further, the communication unit 5 functionally includes a road-parking communication unit 14 and a traffic control information transmission unit 18.

The own vehicle full-length holding unit 11 stores in advance information about the total length (that is, the vehicle body length) of the own vehicle (both road parking A in FIG. 4). The front inter-vehicle length measurement unit 12 measures the front inter-vehicle length based on the output of the sensor group 6 such as a camera and a rider, and supplies the total length calculation unit 13 with the measurement result. In this case, when the front inter-vehicle length cannot be measured, or when the front inter-vehicle length is equal to or greater than the predetermined length, the front inter-vehicle length measuring unit 12 determines that the host vehicle is the leading vehicle, and determines the front inter-vehicle length information. Is not supplied to the total length calculation unit 13. The above-mentioned predetermined length is set in advance, for example, to a distance that allows one vehicle to enter a vehicle ahead with a margin.

The total length calculating unit 13 calculates the total length of the own vehicle based on the information on the total length held by the own vehicle total length holding unit 11 and the information on the front inter-vehicle length supplied from the front inter-vehicle length measuring unit 12, and calculates the total length. The total length information IL indicating the total length of the own vehicle is transmitted to the road-parking communication unit 14. Similarly, the road parking vehicles B and C transmit the total length information IL indicating the information of the total length of each.

The other vehicle total length receiving unit 15 receives the total length information IL from each of the road parking cars B and C via the road-to-parking communication unit 14, and specifies the total length of each of the road parking cars B and C. The road parking total distance calculation unit 16 adds up the total length of each of the road parking cars B and C received by the other vehicle total length reception unit 15 and the total length of the vehicle calculated by the total length calculation unit 13. Then, the total road parking distance Ld is calculated.

The traffic control information transmission determination unit 17 determines that the traffic control information IT needs to be transmitted when the total road parking distance Ld calculated by the total road parking distance calculation unit 16 is equal to or greater than the threshold value Ldth. Here, the threshold value Ldth may be a fixed value corresponding to the distance of two passenger cars or the distance of one truck, and the like, weather, road gradient, poor visibility, road conditions such as time zone and environment. It may be a variable value according to. In the latter case, preferably, the traffic control information transmission determination unit 17 determines that there is a danger in overtaking the road parking as the driving environment deteriorates or under the road condition, and the threshold Ldth is shortened. .. For example, when the traffic control information transmission determination unit 17 determines that the weather is rain based on the output of the raindrop sensor, when it determines that the slope of the target road is greater than or equal to a predetermined angle based on the map data, or when the current time is In the case of the night time zone, etc., the threshold value Ldth is made shorter than that in the case that does not correspond to these cases. This makes it possible to accurately determine whether or not the transmission of the total length information IL is necessary. Then, the traffic control information transmission determination unit 17 determines that the traffic control information IT needs to be transmitted when the total road parking distance Ld calculated by the total road parking distance calculation unit 16 is equal to or greater than the threshold value Ldth, and the traffic control information is determined. Generate information IT. The data structure of the traffic control information IT will be described later.

The traffic control information transmission unit 18 transmits the traffic control information IT when the traffic control information transmission determination unit 17 determines that the traffic control information IT needs to be transmitted. In this case, preferably, when the traffic control information transmitting unit 18 determines that the own vehicle is the last vehicle, the traffic control information transmission unit 18 transmits the traffic control information IT referred to the vehicle E in the same lane, and the own vehicle is the first vehicle. If it is determined that the traffic control information IT to be referred to by the oncoming vehicle D is transmitted. A specific example of the traffic control information IT will be described later in the [Data Structure] section.

FIG. 5 shows a bird's-eye view of the target road on which the vehicles A to E exist. In the example of FIG. 5, there are road parking cars A to C for one-lane roads on one side, a lane vehicle D exists behind the same lane as road parking cars A to C, and road parking cars A to C are present. An oncoming vehicle E exists in the oncoming lane ahead. In this case, the trailing vehicle A, which is the last vehicle, notifies the vehicle D of the same lane that it should stop (that is, that it is a red light) by transmitting the traffic control information IT. It is to be noted that the road parking vehicle A determines that the own vehicle is the rearmost vehicle when it is determined that the rear vehicle is not within the predetermined distance, for example, based on the output of the camera or the rider directed rearward. .. On the other hand, when it is determined that the total road distance Ld is equal to or greater than the threshold value Ldth, the road parking vehicles C, which are the leading vehicles, transmit the traffic control information IT to allow the oncoming vehicle E to pass (that is, the green light). Notification).

Instead of the example of FIG. 5, the last vehicle, the road parking vehicle A, is notified to the vehicle D of the same lane that it can pass (that is, that it is a green light) by the traffic control information IT, and is the first vehicle. Both the road parking C and the oncoming vehicle E may be notified by the traffic control information IT that the oncoming vehicle E needs to be stopped (that is, a red light).

The process executed by the on-lane vehicle D and the oncoming vehicle E will be described with reference to FIG. 4 again. The same lane vehicle D and the oncoming vehicle E receive the traffic control information IT by the traffic control information receiving unit 21 shown in FIG. 4, and determine whether or not to stop based on the received traffic control information IT. Then, the same lane vehicle D and the oncoming vehicle E display on the display unit 22 according to the determination result. In the example of FIG. 5, the vehicle D in the same lane displays on the display unit 22 that the vehicle D should be stopped based on the traffic control information IT transmitted by the road parking vehicle A. On the other hand, the oncoming vehicle E displays on the display unit 22 that the oncoming vehicle E is allowed to pass on the basis of the traffic control information IT transmitted from both the road parking C. In the configuration examples shown in FIGS. 1 and 2, the traffic control information receiving unit 21 corresponds to the communication unit 5, and the display unit 22 corresponds to the light source unit 4, the screen 7, and the combiner 8.

Here, with reference to FIG. 5, the method of calculating the total road parking distance Ld will be supplementarily described.

In the example of FIG. 5, the vehicle F is parked in the parking existing within the range where the inter-vehicle communication with the road parking vehicles A to C is possible. In this case, since the vehicle F is not parked in the same row as the road parking vehicles A to C, the road parking vehicles A to C use the total length information IL transmitted from the vehicle F to calculate the road parking total distance Ld. Need to be discarded without.

In consideration of the above, it is preferable that the control unit 41 add information indicating whether or not the vehicle is present on the road (also referred to as “road presence/absence information”) to the total length information IL. In this case, the control unit 41 determines whether or not the host vehicle is present on the road based on the map data stored in advance or acquired by communication and the host vehicle position information grasped by the GPS receiver or the like. , The determination result is added to the total length information IL and transmitted to the communication unit 5. Then, when the control unit 41 receives the total length information IL from another vehicle, the control unit 41 refers to the road presence/absence information added to the total length information IL, and determines that the transmission source of the total length information IL does not exist on the road. In this case, the total length information IL is not used for calculating the total road parking distance Ld.

In the example of FIG. 5, when the total length information IL is received from the vehicle F, the road parking vehicles A to C refer to the road presence/absence information added to the total length information IL, so that the transmission source vehicle F Recognize that it is not on the road. In this case, the road parking vehicles A to C discard the total length information IL received from the vehicle F. Accordingly, the road parking vehicles A to C can appropriately prevent the total length information IL transmitted from the vehicle F from being used for calculating the road parking total distance Ld.

[data structure]
Next, a specific example of the data structure of the traffic control information IT will be described with reference to FIG. 6A shows a structural example of a data packet of the traffic control information IT transmitted by the road parking vehicle A which is the last vehicle in the example of FIG. 5, and FIG. 6B shows the road which is the leading vehicle. The structural example of the data packet of the traffic control information IT which both parking C transmits is shown.

In the traffic control information IT shown in FIGS. 6A and 6B, traveling direction information and signal information are associated with each other. Here, the traveling azimuth information indicates the azimuth in the traveling direction of the vehicle that is the main body that determines the necessity of stopping based on the associated signal information. In the example of FIG. 5, since the azimuth in the traveling direction of the same lane as the road parking vehicles A to C is north, the traveling azimuth information of FIG. 6A indicates north. Similarly, in the example of FIG. 5, the traveling azimuth of the oncoming lanes of the road parking vehicles A to C is south, so the traveling azimuth information of FIG. 6B indicates south.

In this case, when the rear parking vehicle A, which is the last vehicle, generates the traffic control information IT, the control unit 41 controls the heading of the vehicle based on the output of the GPS receiver, the heading sensor, and/or the map data. (North in this example) is recognized, and the traffic control information IT is generated by associating the heading information indicating the recognized heading with the signal information indicating that a stop is necessary (here, information indicating red). On the other hand, when the road parking vehicle C, which is the leading vehicle, generates the traffic control information IT, the control unit 41 indicates the heading information indicating the heading (the south in this example) opposite to the heading of the recognized vehicle. And traffic control information IT in which the traffic light and the signal information indicating that the vehicle is allowed to pass (here, information indicating blue) are associated with each other.

Then, when the communication unit 5 receives the traffic control information IT while the vehicle is traveling, the control unit 41 causes the traveling direction of the vehicle based on the output of the GPS receiver or the direction sensor or/and the map data. Is recognized, and it is determined whether or not the azimuth indicated by the traveling azimuth information included in the traffic control information IT and the azimuth of the traveling direction of the host vehicle match. Then, when the azimuth indicated by the traveling azimuth information and the azimuth in the traveling direction of the vehicle match, the control unit 41 refers to the signal information associated with the traveling azimuth information to determine whether or not the vehicle needs to be stopped. As a result, when the same lane vehicle D receives the traffic control information IT shown in FIG. 6(A), the azimuth indicated by the traveling azimuth information matches the azimuth in the traveling direction of the own vehicle, and the signal information is “red”. Therefore, it is determined that the stop is necessary. Even if the oncoming vehicle E receives the traffic control information IT shown in FIG. 6A, the oncoming vehicle E has a different azimuth indicated by the traveling azimuth information from the azimuth of the own vehicle. Therefore, the necessity of stopping based on the traffic control information IT is not determined. Similarly, when the oncoming vehicle E receives the traffic control information IT shown in FIG. 6B, the azimuth indicated by the traveling azimuth information matches the azimuth in the traveling direction of the own vehicle, and the signal information is “blue”. Therefore, it is determined that the vehicle can pass.

Instead of the example of FIGS. 6A and 6B, the same traffic control information IT may be transmitted for the last vehicle and the first vehicle. Further, the same traffic control information IT may be transmitted not only to the tail vehicle and the head vehicle but also to all vehicles determined to have the total road parking distance Ld equal to or greater than the threshold value Ldth. FIG. 6C shows an example of the structure of the data packet of the traffic control information IT transmitted in these cases.

The traffic control information IT shown in FIG. 6C includes both two sets of heading information and signal information shown in FIGS. 6A and 6B, respectively. In this case, the control unit 41 arranges the signal information indicating red immediately after the recognized heading information indicating the heading in the traveling direction of the own vehicle, and sets the signal of the heading information indicating the heading opposite to the heading direction of the own vehicle. Immediately after that, signal information indicating blue is arranged. In this case, the control unit 41 of the vehicle, which has received the traffic control information IT, based on the signal information arranged immediately after the traveling direction information when there is traveling direction information that matches the direction of the traveling direction of the vehicle. , Determine whether or not to stop. By doing so, the same lane vehicle D and the oncoming vehicle E can appropriately determine the necessity of stopping, as in the case of transmitting different traffic control information IT for the last vehicle and the first vehicle. it can.

It should be noted that the traveling direction information is not limited to the case where any of the four directions of north, south, east, west, and west as shown in FIGS. Good. In another example, the traveling azimuth information may be represented by a numerical value based on a predetermined azimuth (for example, north). In this case, the control unit 41 of the vehicle that has received the traveling azimuth information considers an error and the like, and if the azimuth indicated by the traveling azimuth information and the azimuth in the traveling direction of the vehicle match within a predetermined angular difference, It may be considered that the azimuth indicated by the traveling azimuth information and the azimuth in the traveling direction of the vehicle match.

[Processing flow]
FIG. 7 is a flowchart showing the procedure of the traffic control information IT transmission process executed by the control unit 41. The control unit 41 repeatedly executes the processing of the flowchart of FIG. 7.

First, the controller 41 determines whether the gear (that is, the position of the shift lever) is parking and the hazard lamp is blinking (step S101). In this case, the control unit 41 determines the position of the shift lever and the presence/absence of blinking of the hazard lamp by communicating with the ECU of the own vehicle via the communication unit 5 by CAN or the like, for example.

Then, when the gear is parked and the hazard lamp is blinking (step S101; Yes), the total length calculation unit 13 of the control unit 41 acquires the information about the total length of the own vehicle from the own vehicle total length holding unit 11. Yes (step S102). In addition, the front inter-vehicle length measuring unit 12 measures the front inter-vehicle length based on the output of the sensor group 6 such as a camera (step S103). Then, the total total length calculation unit 13 calculates the total total length of the own vehicle by adding the total length of the own vehicle acquired in step S102 and the front inter-vehicle length in step S103 (step S104). Then, the road-parking communication unit 14 of the communication unit 5 transmits the total length information IL indicating the total length calculated in step S104 to other road parking vehicles (step S105). Further, the other vehicle total length receiving unit 15 receives the total length information IL indicating the total length of the vehicle from the other road parking via the road parking communication unit 14 (step S106). Then, the road parking total distance calculation unit 16 adds the total length of the own vehicle calculated in step S104 and the total length of each of the other road parking vehicles indicated by the total length information IL received in step S106. , Total road parking distance Ld is calculated (step S107).

Then, the traffic control information transmission determination unit 17 determines whether the total road parking distance Ld is equal to or greater than the threshold value Ldth (step S108). When the traffic control information transmission determination unit 17 determines that the total road parking distance Ld is equal to or greater than the threshold value Ldth (step S108; Yes), it determines the stop position in the road parking (step S109). When the traffic control information transmission determination unit 17 determines that the own vehicle is the head vehicle (step S109; head), the traffic control information for the oncoming vehicle is as shown in FIG. 6B or 6C. IT is generated and transmitted (step S110). On the other hand, when the traffic control information transmission determination unit 17 determines that the own vehicle is the last vehicle (step S109; the last vehicle), the traffic lane information transmission determination unit 17 performs the same lane vehicle as shown in FIG. 6(A) or (C). The traffic control information IT is generated and transmitted (step S111).

On the other hand, when the traffic control information transmission determination unit 17 determines that the vehicle is not the first vehicle or the last vehicle (step S109; other), or the total road parking distance Ld is less than the threshold Ldth ( Step S108; No), and ends the processing of the flowchart without transmitting the traffic control information IT.

[Display based on traffic control information]
Next, a display example based on the traffic control information IT will be described.

FIG. 8(A) shows a display example when the display system 1 is mounted on the same lane vehicle D of FIG. 5 and receives the traffic control information IT shown in FIG. 6(A) or (C). In the example of FIG. 8A, the three vehicles 80 parked in parallel correspond to the road parking vehicles A to C in FIG. 5, and the vehicle 81 traveling in the oncoming lane corresponds to the oncoming vehicle E.

In this case, the control unit 41 determines that the azimuth indicated by the traveling azimuth information included in the traffic control information IT and the azimuth of the traveling direction of the host vehicle both indicate the azimuth “North”, and the corresponding signal information “red”. And recognize that the stop is necessary. Therefore, in the example of FIG. 8A, the control unit 41 causes the red signal mark 85R to be displayed on the combiner 8 together with the characters “stop”.

FIG. 8(B) shows a display example when the display system 1 is mounted on the oncoming vehicle E of FIG. 5 and receives the traffic control information IT shown in FIG. 6(B) or (C). In the example of FIG. 8B, the three vehicles 80 parked in parallel correspond to the road parking vehicles A to C, and the vehicle 82 traveling in the opposite lane corresponds to the same lane vehicle D.

In this case, the control unit 41 determines that the azimuth indicated by the traveling azimuth information included in the traffic control information IT and the azimuth of the traveling direction of the host vehicle both indicate the azimuth "south", and the corresponding signal information "blue". And recognize that the vehicle is passable. Therefore, in the example of FIG. 8(A), the control unit 41 causes the blue signal mark 85B to be displayed on the combiner 8 together with the characters “passable”.

According to these displays, the driver of the same lane vehicle D temporarily stops the same lane vehicle D based on the display of the signal mark 85R, and the driver of the oncoming vehicle E based on the display of the signal mark 85B. To proceed without stopping. As a result, even if the vehicle can only pass in one direction due to the presence of the road parking on the one-lane one-lane road, it is possible to smoothly perform traffic control.

[Calculation of total road parking distance when vehicle is tilted]
Next, a specific example of a method of calculating the total road parking distance Ld when there are road parking vehicles that are inclined with respect to the target road and are stopped will be described. In this case, the control unit 41 determines the direction information of the own vehicle with respect to the road specified based on the output of the sensor group 6, the direction information of the other vehicle acquired by the inter-vehicle communication, and the target road specified by the map data. Based on the azimuth information indicating the extending direction, the angles “θ2”, “θ3”, “φ1”, and “φ2” described below are specified, and the total road parking distance Ld is calculated. Here, the total lengths Lv1 to Lv3 of the road parking vehicles A to C correspond to the lengths of the vectors 90, 93, and 97 shown in FIG. 9, respectively.

FIG. 9 shows a bird's-eye view of the road parking vehicles A to C which are parked in parallel. In the example of FIG. 9, the road parking vehicle B is inclined at an angle “θ2” with respect to the target road, and the road parking vehicle C is inclined at an angle “θ3” with respect to the target road. In this case, the total length of the road parking vehicle B in the extension direction of the target road (that is, the length of the vector 94) becomes “Lv2cosθ2”, and the total length of the road parking vehicle C in the extension direction of the target road (that is, the vector 98). Length) is “Lv3cos θ3”.

Further, the vector 91 of length “Lb1” connecting the tip of the road parking vehicle A and the end of the road parking vehicle B calculated by sharing the direction information of each vehicle through the vehicle-to-vehicle communication and the target road are formed. When the angle is “φ1”, the front inter-vehicle length (that is, the length of the vector 92) between the road parking B and the road parking C in the extension direction of the target road is “Lb1cosφ1”. Similarly, if the angle formed by the vector 95 of length “Lb2” connecting the tip of the road parking B and the end of the road parking C and the target road is “φ2”, the road in the extending direction of the target road The front inter-vehicle length (that is, the length of the vector 96) between the parking car B and the road parking car C is “Lb2cosφ2”.

From the above, the total road parking distance Ld is calculated by the following formula.
Lv1+Lb1cosφ1+Lv2cosθ2+Lb2cosφ2+Lv3cosθ3
As described above, the control unit 41 includes the azimuth information of the own vehicle, the azimuth information of the other vehicle acquired by the inter-vehicle communication, and the map data even when both the road parking and the road are inclined. The road parking total distance Ld can be accurately calculated based on the direction of the extending direction of the target road.

[Modification]
Hereinafter, modified examples suitable for the above embodiment will be described. The following modifications may be applied to the above-described embodiment in any combination.

(Modification 1)
In the flowchart of FIG. 7, the control unit 41 executes the processes of steps S102 to S111 when determining in step S101 that the gear is parked and the hazard lamp is blinking. Instead of this, the control unit 41 may execute the processing of steps S102 to S111 when it is detected that the driver is outside the vehicle.

In this case, for example, the control unit 41 detects that the driver is outside the vehicle based on the output of the sensor group 6 such as the in-vehicle camera, the seating sensor, and the temperature sensor. In another example, the control unit 41 communicates with an in-vehicle device such as a navigation device (not shown) regarding the presence or absence of an operation through the communication unit 5, and when the operation to the in-vehicle device cannot be detected for a predetermined time or more, the driver Determines that he is outside the vehicle. In yet another example, the control unit 41 determines that the driver is outside the vehicle when communication cannot be established with the mobile phone of the driver (not shown). In still another example, the control unit 41 analyzes the voice data generated by a voice input device (not shown) to detect the presence/absence of voice generated in the vehicle, and when the voice generated in the vehicle cannot be detected for a predetermined time or longer. First, it is determined that the driver is outside the vehicle. In this case, the control unit 41 functions as the “driver detection unit” in the present invention.

Further, instead of step S101, the control unit 41 may execute the processes of steps S102 to S111 when detecting that the vehicle is out of order. In this case, for example, the control unit 41 detects the presence/absence of a vehicle failure by performing data communication with the control unit (ECU) of the vehicle regarding the presence/absence of a failure. In this case, the control unit 41 functions as the "fault detection unit" in the present invention.

(Modification 2)
In the flowchart of FIG. 7, when the control unit 41 determines in step S101 that the gear is parked and the hazard lamp is blinking, the control unit 41 immediately calculates the traffic control information IT without performing the calculation process of the total road parking distance Ld. The calling process may be executed. In this case, the control unit 41 transmits, for example, the traffic control information IT for the oncoming vehicle and the vehicle in the same lane shown in FIG. 6(C). Similarly, in the case of the first modification, the control unit 41 immediately transmits the traffic control information IT when the driver is outside the vehicle or when the vehicle is out of order. May be executed.

(Modification 3)
The display system 1 may have a dedicated switch for operation for transmitting the traffic control information IT. In this case, the control unit 41 is electrically connected to the above-mentioned dedicated switch, and when receiving a signal generated by pressing the dedicated switch, transmits the traffic control information IT shown in FIG. 6C or the like. ..

(Modification 4)
When the control unit 41 determines that the traffic signal provided at an intersection along the road where the vehicle is present is approaching within a predetermined distance, the control unit 41 prioritizes the traffic signal display over the traffic control information IT. It is not necessary to transmit the information IT.

In this case, for example, the control unit 41 recognizes that the traffic signal exists in the vicinity when the communication unit 5 receives the predetermined information from the traffic signal through the road-vehicle communication, and stops the transmission processing of the traffic control information IT. .. In another example, when the control unit 41 determines that the vehicle is approaching within a predetermined distance based on the current position recognized based on the output of the GPS receiver or the like and the map data, the traffic control information IT is transmitted. Stop processing.

According to this modification, the control unit 41 can prevent the display of the traffic light and the display based on the traffic control information IT from being displayed simultaneously in the vicinity of the traffic light, and can give priority to the display by the signal.

(Modification 5)
The control unit 41 may perform the transmission processing of the traffic control information IT only when both the vehicle traveling in the same lane and the oncoming vehicle traveling in the oncoming lane are detected.

For example, in this case, the control unit 41 detects a vehicle traveling in the same lane and an oncoming vehicle traveling in the oncoming lane, based on the information received by the communication unit 5 through the inter-vehicle communication. In another example, the control unit 41 detects a vehicle traveling in the same lane and an oncoming vehicle traveling in an oncoming lane, based on an analysis result of the output of an external sensor such as a camera capturing front and rear images. .. Then, when the control unit 41 detects both the vehicle traveling in the same lane and the oncoming vehicle traveling in the oncoming lane, the control unit 41 performs the traffic control information IT transmission process shown in FIG. 7.

According to this modification, it is possible to preferably prevent unnecessary transmission of the traffic control information IT in a situation where traffic control is not required.

(Modification 6)
The data structure of the traffic control information IT is not limited to the example shown in FIG. For example, the traffic control information IT may include waiting time information instead of or in addition to the signal information.

In this case, for example, the waiting time is set to 0 in the traveling direction where the signal information is “blue”, and the waiting time is set to a predetermined second in the traveling direction where the signal information is “red”. The above-mentioned predetermined second may be a fixed value or may be a variable value that is set to be longer as the total road parking distance Ld is longer. Then, when the communication unit 5 receives the traffic control information IT including the above-mentioned waiting time information, the control unit 41 displays the waiting time information. Thereby, smoother traffic control can be realized.

(Modification 7)
In the flowchart of FIG. 7, the control unit 41 executes the processes of steps S102 to S111 when determining in step S101 that the gear is parked and the hazard lamp is blinking. Alternatively, the control unit 41 may execute the processes of steps S102 to S111 when detecting that the engine is stopped and the hazard lamp is blinking.

In this case, the control unit 41 receives the drive voltage from the battery of the vehicle and performs the process.

1 Display system 4 Light source unit 7 Screen 8 Combiner 25 Front window 28 Bonnet 29 Dashboard

Claims (8)

An information device that transmits traffic control information that moves with a vehicle and facilitates traffic of surrounding vehicles,
A parking determination unit that determines whether the vehicle is parked on a one-lane road on one side;
When it is determined by the parking determination unit that the vehicle is parked,
A rear vehicle existing behind the first lane, which is the lane in which the vehicle is parked, and
Oncoming vehicle existing in the oncoming lane of the first lane
An information transmission unit for transmitting traffic control information for urging a stop to one of the rear vehicle and the oncoming vehicle, which is information for rearranging traffic.
An information device including. Wherein the information transmitting unit, as the traffic control information, in claim 1, wherein the vehicle is a direction of information along the road exist, transmits in association with information of necessity of stopping to the orientation Information device described. A detection unit that detects the rear vehicle and the oncoming vehicle,
The information device according to claim 1, wherein the information transmission unit transmits the traffic control information when the detection unit detects both the rear vehicle and the oncoming vehicle. The information device according to claim 1, wherein the information transmission unit transmits the traffic control information including information on waiting time. A calculation unit that calculates the length of a line formed by the parked vehicles on the first lane including the vehicle using inter-vehicle communication;
The information device according to any one of claims 1 to 4, wherein the information transmission unit transmits the traffic control information when the length of the column is equal to or greater than a threshold value. A control method executed by an information device that travels with a vehicle and transmits traffic control information that facilitates traffic of surrounding vehicles,
A parking determination step of determining whether or not the vehicle is parked on a one-lane road on one side;
When it is determined to be parked by the parking determination step,
A rear vehicle behind the first lane in which the vehicle is parked, and
Oncoming vehicle existing in the oncoming lane of the first lane
The information transmission step of transmitting the traffic control information for organizing the traffic of the vehicle, the traffic control information urging the one of the rear vehicle and the oncoming vehicle to stop, the control method. A program executed by a computer of an information device that transmits traffic control information that moves with a vehicle and facilitates traffic of surrounding vehicles,
A parking determination unit that determines whether the vehicle is parked on a one-lane road on one side;
When the parking determination unit determines that the vehicle is parked,
A rear vehicle behind the first lane in which the vehicle is parked, and
Oncoming vehicle existing in the oncoming lane of the first lane
A program for causing the computer to function as an information transmitting unit for transmitting traffic control information, which is information for rearranging traffic, and which transmits traffic control information prompting a stop to one of the rear vehicle and the oncoming vehicle . A storage medium storing the program according to claim 7.