JP7611110B2 - Information processing device, intersection identification method, intersection identification program, and storage medium - Google Patents

Description

The present invention relates to an information processing device that determines whether or not a warning is required at an intersection, an intersection identification method, an intersection identification program, and a recording medium on which the intersection identification program is recorded.

Conventionally, there are navigation systems that warn drivers of accident-prone locations during route guidance. Patent Document 1 discloses a navigation device that predicts the flow of people at intersections and lets the driver know the direction in which to be careful when passing through the intersection. Patent Document 2 discloses an attention-calling information control device that warns drivers of accidents by using a database of accident statistics information by driving situation that corresponds to the area information to which the vehicle's current location belongs.

JP 2009-085738 A JP 2006-133967 A

The above-mentioned Patent Documents 1 and 2 disclose a method of issuing warnings based on pedestrian flow and accident statistics information, but these technologies have the problem that they are unable to issue warnings to prevent accidents caused by vehicles that do not fall under certain vehicle classifications.

Therefore, the present invention has been made in consideration of the above problems, and aims to provide an information processing device, an intersection identification method, an intersection identification program, and a storage medium that can identify intersections where a warning is issued for bicycles suddenly appearing in front of the vehicle, using a method different from that described in Patent Documents 1 and 2.

In order to solve the above problem, an information processing device according to one aspect of the present invention includes a storage unit that stores map information including regulation information stipulated for roads, an extraction unit that extracts from the map information an intersection at which a first road, on which a one-way regulation to which some vehicle classifications do not apply, intersects with a second road, on which a stop regulation is not stipulated, and an identification unit that identifies the intersection as a location at which a warning should be issued to vehicles traveling on the second road and entering the intersection.

In order to solve the above problem, an intersection identification method according to one aspect of the present invention is a method for identifying an intersection at which a warning should be issued, in which an information processing device executes an extraction step of extracting an intersection at which a first road, in which a one-way traffic regulation to which some vehicle classifications do not apply, intersects with a second road, in which a stop regulation is not specified, from map information including regulation information specified for roads stored in a memory unit, and an identification step of identifying the intersection as a location at which a warning should be issued to vehicles traveling on the second road and entering the intersection.

In order to solve the above problem, an intersection identification program according to one embodiment of the present invention causes a computer to execute an extraction function that extracts an intersection where a first road, which is prescribed with one-way traffic regulations to which some vehicle classifications do not apply, and a second road, which is prescribed with no stop regulations, intersect from map information including regulation information prescribed for roads stored in a memory unit, and an identification function that identifies the intersection as a location where a warning should be issued to vehicles traveling on the second road and entering the intersection.

In addition, in the above information processing device, the map information may include information indicating the locations of traffic lights, and the extraction unit may further extract intersections at which no traffic lights are installed.

In addition, in the above information processing device, the extraction unit may extract intersections where bicycles are targeted as a portion of the vehicle classification.

In the above information processing device, the extraction unit may extract an intersection that does not have a stop line or a stop sign before entering the intersection on the first road from a direction that violates a one-way traffic regulation.

The information processing device may further include an acquisition unit that acquires vehicle information about a vehicle that has traveled through an intersection, and the identification unit may identify, based on the vehicle information, a location where a vehicle traveling on the second road suddenly decelerates at an intersection and then proceeds straight through the intersection as a location where a warning should be issued.

In addition, in the above information processing device, the identification unit may identify a location where a warning should be issued when a predetermined number or more of vehicles have traveled along a second road, suddenly decelerated at an intersection, and proceeded straight through the intersection, based on the vehicle information.

In addition, in the above information processing device, the identification unit may identify a location where a warning should be issued when a certain or higher proportion of vehicles traveling on the second road suddenly decelerate at an intersection and proceed straight through the intersection based on the vehicle information.

In the above information processing device, the identification unit may also identify a time period during which the vehicle traveling on the second road suddenly decelerated at an intersection and then passed through the intersection.

In addition, in the above information processing device, the vehicle information may include probe information including position information and time information of the vehicle that has passed through the intersection, and CAN information that can identify the state of the vehicle.

The information processing device may further include a registration unit that registers, in map information for navigation, information indicating that a warning will be issued at a position a predetermined distance before the location identified by the identification unit on the side of the second road entering the intersection.

An information processing device according to one aspect of the present invention includes an extraction unit that extracts from map information an intersection where a first road, which has one-way regulations to which some vehicle classifications do not apply, intersects with a second road, which does not have a stop sign regulation, and an identification unit that identifies the intersection as a location where a warning should be issued to vehicles traveling on the second road and entering the intersection, thereby making it possible to identify an intersection where a specific vehicle from another road connected to the intersection may enter the intersection for a vehicle that is about to enter the intersection.

1 is a block diagram showing an example of the configuration of an information processing device; FIG. 1 is a diagram showing a specific example of an intersection. 11 is a flowchart illustrating an example of the operation of the information processing device. FIG. 13 is a block diagram showing another example of the configuration of the information processing device.

Below, an information processing device according to one embodiment of the present invention will be described in detail with reference to the drawings.

<Embodiment>
<Configuration of information processing device>
An information processing device (see 100 in FIG. 1) according to one aspect of the present invention includes a storage unit (see 104 in FIG. 1) that stores map information including regulation information stipulated for roads, an extraction unit (see 105 in FIG. 1) that extracts from the map information an intersection at which a first road, to which a one-way regulation to which some vehicle classifications do not apply, intersects with a second road, to which a stop regulation is not stipulated, and an identification unit (see 105 in FIG. 1) that identifies the intersection as a location at which a warning should be issued to vehicles traveling on the second road and entering the intersection. The details will be described below.

FIG. 1 is a block diagram showing an example of the functional configuration of an information processing device 100. As shown in FIG. 1, the information processing device 100 includes a communication unit 101, a reception unit 102, an output unit 103, a storage unit 104, and a CPU 105.

The information processing device 100 is a computer system realized by a server device, a PC, etc., but is not limited to these, and may be realized by a mobile terminal such as a smartphone or a tablet terminal. The information processing device 100 may also be a navigation device that provides route guidance, or a map information creation device that registers a flag in map information for navigation indicating whether or not to issue a warning at an intersection. Each functional unit will be described in detail below.

The communication unit 101 has a function of receiving information from other devices through communication. The communication unit 101 may acquire vehicle driving information from an external device, for example, a server that accumulates vehicle driving information, and transmit the information to the CPU 105. The vehicle driving information includes at least position information and time information indicating the time when the position information was acquired. The vehicle driving information may be, for example, probe information, and the server that accumulates the probe information may be, for example, a road traffic information communication system center. The vehicle driving information may also be CAN (Controller Area Network) information including information on various vehicle states, and may include vehicle speed information, brake operation information, steering operation information, and the like. The communication unit 101 may acquire the vehicle driving information directly from the vehicle, or may acquire the vehicle driving information including the CAN information from an external server that accumulates the information. The communication unit 101 transmits the various received information to the CPU 105. The communication unit 101 also transmits the specified information to a specified external device under the instruction of the CPU 105. The communication unit 101 may, for example, transmit map information in which information on whether or not a warning is required is registered to an external navigation device or the like.

The reception unit 102 has a function of receiving input from the user of the information processing device 100 and transmitting it to the CPU 105. The reception unit 102 can be realized, for example, by hardware keys provided on the information processing device 100 or soft keys such as touch keys. Note that the input to the reception unit 102 may be input by voice. The reception unit 102 may receive, for example, an instruction to execute a process to identify an intersection included in the map information 141 that issues a warning to other vehicles when entering the intersection, and transmit the instruction to the CPU 105.

The output unit 103 has a function of outputting data instructed according to instructions from the CPU 105. For example, when the information processing device 100 is a navigation system, the output unit 103 may specify whether or not a warning is required for an exit road at an intersection before passing through the intersection in route guidance, and output a warning of other vehicles entering from other roads as necessary. The output unit 103 may output information on the warning as image information (which may be text data) to a monitor connected to the information processing device 100, may output the information as audio data to a speaker connected to the information processing device 100, or may transmit the information to an external device via the communication unit 101. That is, the output unit 103 functions as a communication interface that outputs information specified by the CPU 105 to a specified destination. In addition, when the CPU 105 specifies an intersection at which a warning is to be issued, the output unit 103 may output information on the intersection.

The storage unit 104 is a recording medium that stores various programs and various data required for the operation of the information processing device 100. The storage unit 104 is realized, for example, by a hard disc drive (HDD), a solid state drive (SSD), a flash memory, etc.

The memory unit 104 may store map information 141.

Map information 141 is map information for navigation, is information that represents roads as connections between links and nodes, and is information that can identify the positions of intersections. Map information 141 may also include information such as restriction information on roads at intersections, such as one-way traffic restrictions and stop restrictions for vehicles excluding certain vehicle categories on roads connected to the intersection. Map information 141 may also store the locations of road signs and the like that indicate the restriction information, and the presence or absence of traffic lights.

The CPU 105 is a processor that uses the various programs and data stored in the memory unit 104 to execute the processes to be performed by the information processing device 100.

The CPU 105 controls each part of the information processing device 100, extracts intersections where at least two roads intersect based on the map information 141, and identifies intersections at which a warning is issued to vehicles entering the intersection and to vehicles that may enter from other roads.

The CPU 105 functions as an extraction unit, a specification unit, and a registration unit.

The extraction unit extracts, from the map information 141 in the storage unit 140, an intersection where a first road, to which one-way traffic regulations to which some vehicle classifications do not apply, intersects with a second road, to which a stop regulation different from that of the first road is not specified. The vehicle classification refers to a classification of vehicles that can run on roads as defined in the Road Transport Vehicle Act and the Road Traffic Act, and includes ordinary cars, small cars, light cars, motorized bicycles, and light vehicles. Light vehicles generally refer to vehicles that do not have a motor, and include bicycles and handcarts. The certain vehicle classifications referred to here refer to vehicles to which some regulations of the Road Traffic Act that apply to normal cars do not apply, and may refer to light vehicles such as bicycles. In addition, the certain regulations may refer to one-way traffic regulations, for example.

The identification unit identifies, from the intersections extracted by the extraction unit, intersections where a specific vehicle may enter the intersection from a road different from the road the vehicle is entering, i.e., intersections where the vehicle occupants should be alerted that there is a possibility that another vehicle may suddenly appear.

Here, we will explain such an intersection using a specific example with reference to Figure 2. Figure 2 is a diagram showing an example of an intersection as viewed from the top.

The intersection 203 in FIG. 2 is an intersection where a first road 201, indicated by a dashed line frame, and a second road 202, indicated by a dotted line frame, intersect. In the example of FIG. 2, a bicycle 21 traveling on the first road 201 and a car 20 traveling on the second road 202 are about to enter the intersection 203. There are no traffic lights at the intersection 203 in FIG. 2, and the driver of the car 20 can enter the intersection 203 at his own discretion. In addition, in the example of FIG. 2, there are no road markings such as a stop restriction on the second road 202, so the car 20 can travel on the second road 202 without stopping temporarily before entering the intersection 203.

On the other hand, it can be seen from road sign 206 that the first road 201 has one-way restrictions for vehicles excluding bicycles as one vehicle category. It can also be seen from road markings 204 that vehicles entering intersection 203 from the right side of the first road 201 in the drawing are required to stop. Here, road sign 205 shows that of the vehicles traveling on first road 201, vehicles excluding bicycles as one vehicle category are required to stop temporarily, but that this obligation does not apply to bicycles. On such a first road 201, bicycle 21 may pass through intersection 203 from the left to the right in the drawing without stopping temporarily. Because one-way traffic regulations are imposed on the first road 201 for vehicles other than certain vehicle categories, when a vehicle 20 traveling on the second road 202 enters the intersection 203 from the bottom of the drawing, the driver tends to pay attention to entering from the right side as seen from the vehicle 20, and when a vehicle enters the intersection from the top of the drawing on the second road 202, the driver tends to pay attention to entering from the left side.

In other words, on such a first road 201, the driver of the automobile 20 usually tends to pay more attention to other vehicles entering from the direction corresponding to the direction of the one-way traffic regulation. That is, in the example of FIG. 2, the driver of the automobile 20 pays close attention to vehicles entering the intersection 203 from the right side of the first road 201, but may pay less attention to vehicles entering from the left side.

As a result, the driver of the automobile 20 will be less attentive to the bicycle 21 approaching the intersection 203 from the left, which may result in a collision accident between the automobile 20 and the bicycle 21. The information processing device 100 identifies intersections where the driver of the automobile 20 may be expected to be less aware of other vehicles based on regulations such as road signs, and in the illustrated example, issues a warning to vehicles traveling on the second road 202 before entering the intersection 203, indicating that the intersection is an intersection that requires a warning that there is a possibility of another vehicle entering from the first road 201, or registers the intersection in the map information 141 as an intersection where a warning is required.

Returning to FIG. 1, the identification unit may identify the intersection extracted by the extraction unit as an intersection where a warning is required for vehicles of certain vehicle categories entering the intersection.

The identification unit may further narrow down the intersections for which a warning should be issued from among the intersections extracted by the extraction unit based on various conditions, thereby improving the accuracy of identifying intersections for which a warning should be issued. The various conditions are conditions that can predict the possibility of an accident or the like occurring at the intersection 203, and may be intersections that satisfy any one or more of the conditions listed below. It is optional whether or not to apply these various conditions, and the reception unit 102 of the information processing device 100 may set whether or not to apply them based on instructions from an operator or the like.

The identification unit may narrow down the intersections based on the presence or absence of traffic lights at the intersection. As shown in FIG. 2, at an intersection without traffic lights, entry into the intersection is left to the discretion of the individual, and some people may enter the intersection without stopping before the intersection. In addition, when a bicycle is entering the intersection and the vehicle has priority, the driver may enter the intersection without stopping if there is no traffic light. In such a situation, there is a possibility that a collision accident may occur due to carelessness or negligence on the part of both the driver of the automobile 20 and the driver of the bicycle 21. Therefore, the identification unit may identify an intersection without a traffic light on the first road or the second road from among the intersections extracted by the extraction unit.

The identification unit may set a condition for narrowing down intersections that some vehicle classifications are bicycles. While bicycles are vehicles that should comply with road laws, some people may not be aware that they are vehicles and may have a low awareness that they should comply with road laws, making it easy for them to run out into intersections. For this reason, the identification unit may set a condition for narrowing down intersections that some vehicles are not subject to one-way traffic regulations in the map information 141 as bicycles.

The identification unit may, as a condition for narrowing down intersections, identify intersections extracted by the extraction unit where the vehicle has suddenly decelerated or turned the steering wheel abruptly in the past. Turning the steering wheel abruptly means changing the direction of travel by abruptly operating the steering wheel. If the vehicle has suddenly decelerated or turned the steering wheel abruptly, it is possible that the vehicle has attempted to brake or change direction in order to avoid colliding with some object.

The identification unit may identify whether there is evidence of such an operation at the target intersection based on vehicle travel information (e.g., probe information or CAN information) acquired via the communication unit 101, and if there is, identify the intersection as an intersection for which a warning is to be issued. Specifically, the identification unit identifies the location of the intersection from the map information 141, and identifies a vehicle that has evidence of traveling at the identified location from the probe information including the vehicle's location information. Then, based on the CAN information of the vehicle that has traveled through the intersection, the driving situation at the time of traveling through the intersection is identified. For example, the identification unit identifies whether or not a situation such as (i) sudden deceleration, (ii) braking operation, (iii) change in steering angle of the steering wheel by a predetermined angle or more, or (iv) honking has occurred when entering the intersection. Then, if there is evidence of any one or more of these situations occurring, the identification unit identifies the intersection as an intersection for which a warning is to be issued to the driver of the vehicle when entering.

The registration unit registers the intersection identified by the identification unit in the map information 141 as an intersection where a warning is required for the driver of a vehicle entering the intersection. At this time, the registration unit may register that a warning is required only for a specific road that intersects at the intersection, rather than for the intersection itself. For example, in the example of FIG. 2, the registration unit may register that a warning is required only for vehicles traveling on the second road 202. By storing this map information 141 in a navigation system that guides vehicles, it is possible to warn drivers of bicycles and other vehicles before entering an intersection on a route to a destination inputted into the navigation system.

In addition, when the information processing device 100 is a navigation system, the CPU 105 may issue a warning against a bicycle or other object jumping out from another road connected to the intersection identified by the identification unit before the vehicle equipped with the information processing device 100 attempts to enter the intersection. The warning is issued by output from the output unit 103, and may be output as an image or text on a monitor provided in the information processing device 100, or as an audio output from a speaker provided in the information processing device 100.

The above is an example configuration of the information processing device 100.

<Operation of the information processing device>
Next, the operation of the information processing device 100 will be described.

Figure 3 is a flowchart showing an example of the operation of the information processing device 100.

As shown in FIG. 3, the CPU 105 of the information processing device 100 acquires map information 141 from the memory unit 104 (step S301).

The CPU 105 (extraction unit) extracts from the acquired map information 141 an intersection where a first road, which has a one-way traffic regulation that does not apply to some vehicle classifications, intersects with a second road, which does not have a stop stop regulation (step S302).

The CPU 105 (identification unit) determines whether additional conditions are met as necessary (step S303), and identifies intersections that are determined to meet the additional conditions. That is, the CPU 105 may determine whether any one or more of the above-mentioned various conditions are met, such as that there is no traffic light at the extracted intersection, that some vehicle classifications are bicycles, and that there is evidence that a vehicle that has previously traveled through the extracted intersection has suddenly decelerated or steered, and may narrow down the extracted intersections.

The CPU 105 (identification unit) identifies the identified intersection or a second road that can enter the intersection as a location where a warning should be issued to vehicles traveling on the second road and entering the intersection (step S304). If the intersection is identified as a location where a warning should be issued, a warning may be issued to vehicles traveling on both the first road and the second road, and if a road connected to the intersection is identified as a location where a warning should be issued, a warning may be issued only to vehicles traveling on the identified road.

Then, the CPU 105 executes a predetermined process based on the identified intersection (step S305), and ends the process. Here, if the information processing device 100 is a map information creation device that edits and creates the map information 141, the predetermined process may be to register a flag in the map information 141 indicating that a warning should be issued for the identified intersection. If the information processing device 100 is a navigation system, the predetermined process may be to warn the driver before the vehicle enters the identified intersection. The predetermined process may also be to output information about the identified intersection.

<Summary of the embodiment>
The information processing device 100 according to the first embodiment identifies an intersection where a first road, on which one-way traffic regulations are imposed for vehicles other than some vehicle categories, and a second road, on which no stop regulations different from those of the first road are prescribed, intersect as an intersection where a warning is required for vehicles. In a situation where a vehicle included in some vehicle categories does not violate the law by traveling in the opposite direction to the direction in which the one-way traffic regulations are imposed, and a vehicle traveling on the second road, on which no stop regulations are prescribed, does not violate the law by not stopping when entering the intersection, there is a possibility that a contact accident will occur due to carelessness or lack of attention on the part of both drivers. By identifying such an intersection as an intersection where a warning is required and registering it in the map information 141 or issuing a warning before entering the intersection, such a contact accident can be prevented.

<Additional Information>
The information processing device according to the above embodiment is not limited to the above embodiment, and may be realized by other methods. Various modifications will be described below.

(1) In the above embodiment, the information processing device 100 identifies an intersection for which a warning is issued based on the presence or absence of a vehicle that shows signs of performing a specific operation based on the vehicle driving information of a vehicle that shows signs of having entered the intersection in the past. In this case, the information processing device 100 may identify an intersection as an intersection for which a warning is issued if it is determined that a predetermined number or more of vehicles have performed an operation such as sudden deceleration or sudden steering when entering the intersection. Alternatively, the information processing device 100 may identify an intersection as an intersection for which a warning is issued if the proportion (frequency) of vehicles that have performed an operation such as sudden deceleration or sudden steering when entering the intersection within a predetermined period (which may be, for example, one week, one month, etc., but is not limited to these) is equal to or greater than a predetermined threshold. By configuring the information processing device 100 in this way, the accuracy of identifying an intersection for which a warning is issued may be further improved.

(2) In the above embodiment, the information processing device 100 identifies an intersection for which a warning is issued based on the presence or absence of a vehicle that has evidence of performing a specific operation based on the vehicle travel information of a vehicle that has evidence of having entered the intersection in the past. In this case, the information processing device 100 may further identify the time period during which the specific operation was performed. Depending on the location and time period of the intersection, it may be possible to identify a time period during which operations such as sudden deceleration and sudden steering are likely to be performed as the traffic volume and environment change. Therefore, the information processing device 100 identifies and accumulates the time period during which operations such as sudden deceleration and sudden steering are performed at the intersection based on the time information included in the probe information and the CAN information of the corresponding vehicle. Then, if the identified times are concentrated in a specific time period, the intersection may be identified as an intersection for which a warning is issued only during that specific time period. In this case, the registration unit may register the time period during which the warning is issued in the flag of the intersection for which a warning is issued in the map information 141. In addition, if the information processing device 100 is a navigation system, it may be configured to output a warning when a vehicle equipped with the system is about to enter the intersection during that specific time period.

(3) In the above embodiment, the method of identifying an intersection where a warning is issued in the information processing device is to have the processor of the information processing device execute a program or the like for identifying an intersection where a warning is issued, but this may be realized by a logic circuit (hardware) or a dedicated circuit formed in an integrated circuit (IC (Integrated Circuit) chip, LSI (Large Scale Integration)) or the like in the device. In addition, these circuits may be realized by one or more integrated circuits, and the functions of the multiple functional units shown in the above embodiment may be realized by one integrated circuit. Depending on the degree of integration, the LSI may be called a VLSI, a super LSI, an ultra LSI, or the like. That is, as shown in FIG. 4, the information processing device 100 may be composed of a communication circuit 101a, a reception circuit 102a, an output circuit 103a, a memory circuit 104a, and a control circuit 105a, which correspond to the communication unit 101, the reception unit 102, the output unit 103, the memory unit 104, and the CPU 105, respectively.

The program may be recorded on a processor-readable recording medium, and the recording medium may be a "non-transient tangible medium" such as a tape, disk, card, semiconductor memory, or programmable logic circuit. The program may be supplied to the processor via any transmission medium capable of transmitting the program (such as a communication network or broadcast waves). In other words, the program may be downloaded from a network and executed using an information processing device such as a smartphone. The present invention may also be realized in the form of a data signal embedded in a carrier wave, in which the program is embodied by electronic transmission.

The above program can be implemented using, for example, a scripting language such as ActionScript or JavaScript (registered trademark), or an object-oriented programming language such as Objective-C, Java (registered trademark), C++, Python, or R.

(4) The various examples shown in the above embodiment and the various examples shown in the <Supplementary Note> may be combined as appropriate. In addition, the execution order of each operation shown in each flowchart may be changed or the operations may be executed in parallel, provided that no contradiction results. For example, the processes of steps S302 and S303 shown in FIG. 3 may be executed as a single process.

100 Information processing device 101 Communication unit 102 Reception unit 103 Output unit 104 Storage unit 105 CPU (extraction unit, identification unit, registration unit)

Claims (13)

A storage unit that stores map information including regulation information prescribed for roads;
an extraction unit that extracts, from the map information, an intersection at which a first road, to which a one-way traffic regulation that does not apply to some vehicle classifications is specified, and a second road, to which a stop sign regulation is not specified, intersects;
an identification unit that identifies the intersection as a location for issuing a warning to a vehicle traveling on the second road and entering the intersection;
An information processing device comprising: The map information includes information indicating locations of traffic lights,
The information processing device according to claim 1 , wherein the extraction unit further extracts, from the intersections, intersections at which no traffic lights are installed. The information processing device according to claim 1 , wherein the extraction unit extracts intersections where bicycles are targeted as the partial vehicle classification. The information processing device according to any one of claims 1 to 3, characterized in that the extraction unit extracts an intersection on the first road that does not have a stop line or a stop sign before entering the intersection from a direction that violates the one-way traffic regulation. An acquisition unit that acquires vehicle information of a vehicle that has traveled through the intersection,
The information processing device according to any one of claims 1 to 4, characterized in that the identification unit, based on the vehicle information, identifies a location where a vehicle traveling on the second road suddenly decelerates at the intersection and proceeds straight through the intersection as a location where the warning should be issued. The information processing device according to claim 5, characterized in that the identification unit identifies, based on the vehicle information, a location where the warning should be issued when a predetermined number or more of vehicles have traveled on the second road, suddenly decelerated at the intersection, and gone straight through the intersection. The information processing device according to claim 5, characterized in that the identification unit identifies the intersection as a location where the warning should be issued when a certain or greater proportion of vehicles traveling on the second road suddenly decelerate at the intersection and proceed straight through the intersection based on the vehicle information. The information processing device according to any one of claims 5 to 7, characterized in that the identification unit also identifies a time period during which a vehicle traveling on a second road suddenly decelerated at the intersection and passed through the intersection. The information processing device according to any one of claims 5 to 8, characterized in that the vehicle information includes probe information including position information and time information of a vehicle that has traveled through the intersection, and CAN information capable of identifying the state of the vehicle. The information processing device according to any one of claims 1 to 9, further comprising a registration unit that registers, in map information for navigation, information indicating that a warning will be issued on the second road at a position a predetermined distance before the location identified by the identification unit on the side entering the intersection. An intersection identification method for identifying an intersection at which a warning is issued,
An information processing device,
an extraction step of extracting an intersection where a first road, to which a one-way traffic regulation to which some vehicle classifications do not apply is prescribed, and a second road, to which a stop sign regulation is not prescribed, intersect from map information including regulation information prescribed for roads stored in a storage unit;
a step of identifying the intersection as a location for issuing a warning to vehicles traveling on the second road and entering the intersection;
An intersection identification method for performing On the computer,
an extraction function for extracting an intersection where a first road, to which a one-way traffic regulation to which some vehicle classifications do not apply is specified, and a second road, to which no stop regulation is specified, intersect from map information including regulation information specified for roads stored in a storage unit;
A function of identifying the intersection as a location for issuing a warning to vehicles traveling on the second road and entering the intersection;
An intersection identification program that executes the above. A computer-readable storage medium storing the intersection identification program according to claim 12.

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