Terminals and information processing devices

Abstract

To improve an effect of preventing traffic accidents.SOLUTION: A first portable terminal 12 includes: an acquisition unit that is carried by a first user and acquires information on a safety checking point from a server 46 that sets, as the safety checking point, a vehicle gateway into a site on a roadway side on the basis of information representing a traveled track of a vehicle 68 and map information; and a control unit that causes a notification unit to issue a notification to alert a user if an own device (the first portable terminal 12) is positioned in a safety checking region including the safety checking point where the information has been acquired by the acquisition unit.SELECTED DRAWING: Figure 1

Description

Technical Field

[0006] , , ,

[0001] The present disclosure relates to a terminal and an information processing apparatus.

Background Art

[0002] Patent Document 1 describes that when a mobile terminal carried by a child or the like to be monitored approaches a position separated by a predetermined distance from a geographical position including a predetermined position where a predetermined operation such as a left - right confirmation operation needs to be executed, the vibrator of the mobile terminal is operated to notify the child or the like of the approach to the geographical position.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Patent Document 1 describes that regarding the geographical position (the predetermined position), it can be manually set by the child's guardian or set to a dangerous location acquired from a server. However, in the technology described in Patent Document 1, there is a possibility of omission in setting the geographical position. That is, although the vehicle entrance and exit to the site existing beside the roadway is a place with a high traffic safety risk, since it is not a roadway, it is likely to be overlooked in the manual setting of the predetermined position, and since it is not explicitly shown on the map information, there is also an omission in the automatic setting of the predetermined position. Therefore, the technology described in Patent Document 1 has room for improvement from the viewpoint of improving the effect of suppressing traffic accidents.

[0005] The present disclosure has been made in consideration of the above facts, and an object thereof is to obtain a terminal and an information processing apparatus capable of improving the effect of suppressing traffic accidents.

Means for Solving the Problems

[0007] When a vehicle enters or exits a plot of land adjacent to a roadway, the information representing the vehicle's travel trajectory will include a record of its entry into or exit from the adjacent plot. Therefore, vehicle entrances and exits to adjacent plots of land can be recognized based on the information representing the vehicle's travel trajectory and map information. Based on the above, in the first embodiment, the information processing device sets vehicle entrances and exits to adjacent plots of land as safety confirmation areas based on the information representing the vehicle's travel trajectory and map information. This ensures that vehicle entrances and exits to adjacent plots of land are also included in the safety confirmation areas without fail.

[0008] In the first embodiment, the acquisition unit acquires information on the safety confirmation area from the information processing device, and the control unit causes the notification unit to issue a warning when the device is located in the safety confirmation area for which the acquisition unit has acquired information. As a result, when the person carrying the terminal approaches a safety confirmation area, including vehicle entrances and exits to a property next to the roadway, a warning notification is issued, which can encourage safety checks, especially at vehicle entrances and exits to properties next to roadways where traffic safety risks are high, thereby improving the effect of reducing traffic accidents.

[0009] In the second embodiment, in the first embodiment, the acquisition unit acquires information on the safety confirmation area, which is obtained by the information processing device through a process in which the travel trajectory of a vehicle intersecting the roadway on the map information is set to the safety confirmation area, which is an area within a predetermined range from the intersection point of the travel trajectory and the widthwise end of the roadway.

[0010] The intersection points of the vehicle trajectory crossing the roadway on the map information and the widthwise edge of the roadway can be estimated to be vehicle entrances and exits to properties such as shops and parking lots next to the roadway. Therefore, according to the second embodiment, even when there is no information on sidewalks, vehicle entrances and exits to properties next to the roadway can be accurately set within the safety confirmation area, and the notification unit will issue a warning in the safety confirmation area, thereby further improving the effect of suppressing traffic accidents.

[0011] In the third embodiment, in the second embodiment, information representing the vehicle's trajectory is supplemented with information representing the vehicle's speed, and the acquisition unit acquires information on the safety confirmation area, which is obtained by the information processing device through a process in which, among the vehicle trajectories that intersect the roadway on the map information, the vehicle traveled at a speed below a predetermined value, and the area within a predetermined range from the intersection point of the trajectory and the widthwise end of the roadway is set as the safety confirmation area.

[0012] Among the vehicle trajectories that intersect the roadway on the map, those where the vehicle traveled at a speed below a predetermined value are highly likely to be the trajectory of a vehicle entering or exiting a vehicle entrance to a property adjacent to the roadway. Therefore, according to the third embodiment, even when there is no information on sidewalks, vehicle entrances to properties adjacent to the roadway are accurately set within the safety confirmation area, and the notification unit issues a warning in that safety confirmation area, thereby further improving the effect of suppressing traffic accidents.

[0013] In the fourth aspect, in the first aspect, the acquisition unit acquires information on the safety confirmation area, which is obtained by performing a process in the information processing device to set the area within a predetermined range from the intersection point of the vehicle's trajectory that crosses the sidewalk on the map information represented by the sidewalk information as the safety confirmation area.

[0014] According to the fourth embodiment, when information on a sidewalk is available, the vehicle entrance and exit to the property next to the roadway are accurately set as a safety confirmation area using the information on the sidewalk. As a result, the notification unit issues a warning in the safety confirmation area, which further improves the effect of suppressing traffic accidents.

[0015] In the fifth aspect, in the first aspect, the acquisition unit acquires information about the safety confirmation area after the information processing device has performed a process in which, if the proportion of vehicles entering from the lane furthest from the vehicle entrance / exit is greater than or equal to a predetermined value, the vehicle entrance / exit is set as a safety confirmation area, and if the proportion of vehicles entering from the lane furthest from the vehicle entrance / exit is less than or equal to a predetermined value, the vehicle entrance / exit is not set as a safety confirmation area.

[0016] According to the fifth embodiment, among the vehicle entrances and exits to the site next to the roadway, locations where there are many vehicle entries from the lane furthest from the entrance / exit, i.e., locations where the traffic safety risk is estimated to be higher, are accurately set as the safety confirmation area. Therefore, by issuing a warning notification by the notification unit in the safety confirmation area, the effect of suppressing traffic accidents can be further improved.

[0017] In the sixth aspect, in the first aspect, the acquisition unit acquires information on the safety confirmation area after the information processing device has performed a process in which, if the frequency of vehicles stopping within a predetermined range from in front of the vehicle entrance / exit in the lane closest to the vehicle entrance / exit is greater than or equal to a predetermined value, the vehicle entrance / exit is set as a safety confirmation area, and if the frequency of vehicles stopping is less than the predetermined value, the vehicle entrance / exit is not set as a safety confirmation area.

[0018] According to the sixth embodiment, among the vehicle entrances and exits to the property next to the roadway, locations where the risk of so-called "thank you accidents" is estimated to be high, that is, locations where the traffic safety risk is estimated to be higher, are accurately set as safety confirmation areas. Therefore, by issuing warnings to alert drivers in these safety confirmation areas, the effect of suppressing traffic accidents can be further improved.

[0019] The information processing device according to the seventh embodiment includes a setting unit that sets a vehicle entrance to a plot of land beside a roadway as a safety confirmation area based on information representing the vehicle's driving trajectory and map information, and a transmitting unit that transmits information about the safety confirmation area set by the setting unit to the terminal, so that when the terminal, which is carried by the owner and includes a notification unit, is located in the safety confirmation area, the notification unit issues a warning notification.

[0020] In the seventh embodiment, the setting unit sets vehicle entrances and exits to land adjacent to the roadway as safety confirmation areas based on information representing the vehicle's trajectory and map information, so that vehicle entrances and exits to land adjacent to the roadway are also included in the safety confirmation areas. The transmitting unit then transmits the information of the safety confirmation areas set by the setting unit to the terminal, which is carried by the owner and includes a notification unit, so that when the terminal is located in a safety confirmation area, the notification unit issues a warning. As a result, when the owner carrying the terminal approaches a safety confirmation area, including vehicle entrances and exits to land adjacent to the roadway, a warning is issued, which can encourage safety checks, especially at vehicle entrances and exits to land adjacent to the roadway, where traffic safety risks are high, and improve the effect of reducing traffic accidents.

[0021] The eighth aspect is, in the seventh aspect, the setting unit sets the area within a predetermined range from the intersection point of the vehicle's trajectory crossing the roadway on the map information to the safety confirmation area.

[0022] The intersection points of the vehicle trajectory crossing the roadway on the map information and the widthwise edges of the roadway can be estimated to be vehicle entrances and exits to properties such as shops and parking lots next to the roadway. Therefore, according to the eighth embodiment, even when there is no information on sidewalks, vehicle entrances and exits to properties next to the roadway can be accurately set as safety confirmation areas.

[0023] In the ninth aspect, in the eighth aspect, information indicating the vehicle speed of the vehicle is added to the information representing the driving trajectory of the vehicle, and the setting unit determines, among the driving trajectories of the vehicles intersecting the lane on the map information, for the driving trajectories in which the vehicle has traveled at a vehicle speed less than a predetermined value, an area within a predetermined range from the intersection of the driving trajectory and the widthwise end of the lane as the safety confirmation area.

[0024] Among the driving trajectories of the vehicles intersecting the lane on the map information, the driving trajectories in which the vehicle has traveled at a vehicle speed less than a predetermined value are likely to be the trajectories when the vehicle enters and exits the site beside the lane. Therefore, according to the ninth aspect, even when there is no sidewalk information, it is possible to accurately set the area for vehicle entry and exit to the site beside the lane as the safety confirmation area.

[0025] In the tenth aspect, in the seventh aspect, the setting unit determines, for the driving trajectories of the vehicles intersecting the sidewalk on the map information represented by the sidewalk information, an area within a predetermined range from the intersection of the driving trajectory and the sidewalk as the safety confirmation area.

[0026] According to the tenth aspect, when there is sidewalk information, by using the sidewalk information, it is possible to accurately set the area for vehicle entry and exit to the site beside the lane as the safety confirmation area.

[0027] In the eleventh aspect, in the seventh aspect, the setting unit sets the vehicle entry and exit as the safety confirmation area when the entry ratio of the vehicle from the lane far from the vehicle entry and exit is a predetermined value or more, and does not set the vehicle entry and exit as the safety confirmation area when the entry ratio is less than the predetermined value.

[0028] According to the eleventh aspect, among the vehicle entry and exits to the site beside the lane, it is possible to set as the safety confirmation area a place where there is a lot of entry from the lane far from the vehicle entry and exit, that is, a place where the traffic safety risk is presumed to be higher.

[0029] The twelfth aspect is, in the seventh aspect, the setting unit sets the vehicle entrance / exit as a safety confirmation area if the frequency of vehicles stopping within a predetermined range from the vehicle entrance / exit in the lane closest to the vehicle entrance / exit is greater than or equal to a predetermined value, and does not set the vehicle entrance / exit as a safety confirmation area if the frequency of vehicles stopping is less than the predetermined value.

[0030] According to the 12th embodiment, it becomes possible to designate a safety confirmation area at locations among the vehicle entrances and exits to the site next to the roadway where the risk of so-called "thank you" accidents is estimated to be high, that is, locations where the traffic safety risk is estimated to be higher. [Effects of the Invention]

[0031] This disclosure has the effect of improving the effectiveness of reducing traffic accidents. [Brief explanation of the drawing]

[0032] [Figure 1] This is a schematic diagram showing the overall configuration of the notification system according to the embodiment. [Figure 2] Block diagram showing the hardware configuration of the first mobile terminal. [Figure 3] This is a functional block diagram of the first mobile terminal. [Figure 4] Block diagram showing the server hardware configuration [Figure 5] This is a functional block diagram of the server. [Figure 6] This is a block diagram showing the hardware configuration of an in-vehicle system. [Figure 7] This is a flowchart showing the safety confirmation point setting process executed by the server according to the first embodiment. [Figure 8] This is a schematic diagram illustrating the setting of safety confirmation points in the first embodiment. [Figure 9] This is a flowchart showing the safety confirmation point notification process performed on the first-type terminal. [Figure 10] This is a flowchart showing the safety confirmation point setting process executed by the server according to the second embodiment. [Figure 11] This is a flowchart showing the safety confirmation point setting process executed by the server according to the third embodiment. [Figure 12] This is a schematic diagram illustrating the setting of safety confirmation points in the third embodiment. [Figure 13] This is a flowchart showing the safety confirmation point setting process executed by the server according to the fourth embodiment. [Figure 14] This is a schematic diagram illustrating the setting of safety confirmation points in the fourth embodiment. [Modes for carrying out the invention]

[0033] Hereinafter, an example of an embodiment of this disclosure will be described in detail with reference to the drawings.

[0034] [First Embodiment] The notification system 10 shown in Figure 1 is a system that alerts a first user, who is walking on a road carrying a first mobile terminal 12, when the first user approaches a safety check point where safety checks are recommended, thereby drawing the first user's attention and making them aware that they are at a safety check point.

[0035] The notification system 10 includes a first mobile terminal 12, a server 46, an in-vehicle system 70 mounted on a vehicle 68, and a second mobile terminal 100 carried by a second user. The first mobile terminal 12, server 46, in-vehicle system 70, and second mobile terminal 100 are capable of communicating with each other via a wireless communication network 102. Although Figure 1 shows two vehicles 68, the number of vehicles 68 is not limited to this.

[0036] An example of a first user carrying the first mobile terminal 12 is a child, and an example of a second user carrying the second mobile terminal 100 is a child's guardian. The first mobile terminal 12 is designed to be attachable to pedestrians, for example, by attaching it to the strap of a shoulder bag carried by a child. The first mobile terminal 12 is an example of a terminal related to this disclosure, and the server 46 is an example of an information processing device related to this disclosure.

[0037] As shown in Figure 2, the first mobile terminal 12 includes a terminal control unit 14. The terminal control unit 14 includes a CPU (Central Processing Unit) 16, a memory 18 including ROM (Read Only Memory) and RAM (Random Access Memory), a storage unit 20 consisting of an HDD (Hard Disk Drive) or SSD (Solid State Drive), a communication interface 22, and an input / output interface 24. The CPU 16, memory 18, storage unit 20, communication interface 22, and input / output interface 24 are connected to each other via an internal bus 26 so that they can communicate with one another.

[0038] The memory unit 20 stores the terminal program 28 and is provided with a safety confirmation point information storage area 30. The terminal control unit 14 functions as the acquisition unit 40, control unit 42, and notification unit 44 shown in Figure 3, respectively, when the terminal program 28 is read from the memory unit 20 and loaded into the memory 18, and the terminal program 28 loaded into the memory 18 is executed by the CPU 16.

[0039] The acquisition unit 40 acquires information on safety confirmation areas from a server 46 (details described later) that sets vehicle entrances and exits to the premises next to the roadway as safety confirmation areas based on information representing the vehicle's trajectory and map information. The control unit 42 has the notification unit 44 issue a warning notification when the user (first mobile terminal 12) is located in a safety confirmation area for which information has been acquired by the acquisition unit 40.

[0040] Furthermore, the input / output interface 24 is connected to a GNSS (Global Navigation Satellite System) device 32, a speaker 34, a vibrator 36, and a motion sensor 38. The GNSS device 32 periodically detects the position (latitude and longitude) of the first mobile terminal 12 by receiving GNSS signals from GNSS satellites. The speaker 34 outputs audio such as voice messages in response to instructions from the terminal control unit 14. The vibrator 36 operates in response to instructions from the terminal control unit 14 to vibrate the first mobile terminal 12. The aforementioned notification unit 44 includes the speaker 34 and the vibrator 36.

[0041] The motion sensor 38 is, for example, a sensor equipped with a 3-axis accelerometer, a 3-axis gyroscope, and a geomagnetic sensor, and is capable of detecting the actions of the first user carrying the first mobile terminal 12 (for example, safety actions such as pausing, checking left and right, and raising a hand).

[0042] As shown in Figure 4, the server 46 includes a CPU 48, memory 50 including ROM and RAM, a storage unit 52 consisting of an HDD or SSD, and a communication interface. The CPU 48, memory 50, storage unit 52, and communication interface 54 are connected to each other via an internal bus 56 so that they can communicate with one another.

[0043] The storage unit 52 has the server program 58 and map information 60 pre-stored in it. The server 46 functions as the vehicle driving information acquisition unit 62, setting unit 64, and transmission unit 66 shown in Figure 5, respectively, when the server program 58 is read from the storage unit 52 and loaded into the memory 50, and the server program 58 loaded into the memory 50 is executed by the CPU 48.

[0044] The vehicle driving information acquisition unit 62 acquires vehicle driving information (details described later) from the vehicle's onboard system 70. The setting unit 64 sets the vehicle entrances and exits to the premises beside the roadway as safety confirmation areas based on the information representing the vehicle's driving trajectory included in the vehicle driving information and the map information 60. The transmission unit 66 transmits the safety confirmation area information set by the setting unit 64 to the first mobile terminal 12 so that the notification unit 44 issues a warning when the first mobile terminal 12 is located in the safety confirmation area.

[0045] As shown in Figure 6, the in-vehicle system 70 includes an ECU (Electronic Control Unit) 72, which includes a CPU 74, a memory 76 including ROM and RAM, a storage unit 78 consisting of an HDD or SSD, a communication interface 80, and an input / output interface 82. The CPU 74, memory 76, storage unit 78, communication interface 80, and input / output interface 82 are connected to each other so as to be able to communicate with one another via an internal bus 84.

[0046] The input / output interface 82 is connected to a GNSS device 88, a brake sensor 90, a steering angle sensor 92, a vehicle speed sensor 94, an acceleration sensor 96, and a front camera 98 via a system bus 86. The GNSS device 88 periodically detects the position (latitude and longitude) of the vehicle 68 and transmits the detected vehicle 68 position information to the ECU 72. The brake sensor 90 detects the amount of depression of a brake pedal (not shown) on the vehicle 68 and transmits the detected brake pedal depression amount information to the ECU 72. The steering angle sensor 92 detects the steering angle of a steering wheel (not shown) on the vehicle 68 and transmits the detected steering angle information to the ECU 72.

[0047] The vehicle speed sensor 94 detects the vehicle speed of the vehicle 68 and transmits the vehicle speed information to the ECU 72. The acceleration sensor 96 detects the acceleration of the vehicle 68 and transmits the acceleration information to the ECU 72. Note that the acceleration sensor 96 can be omitted if the acceleration is calculated from the vehicle speed information of the vehicle 68. The front camera 98 is installed at the front of the vehicle 68 and captures an image of the area in front of the vehicle 68 and transmits the image information obtained from the capture to the ECU.

[0048] The ECU 72 first stores the information received from the GNSS device 88, brake sensor 90, steering angle sensor 92, vehicle speed sensor 94, acceleration sensor 96, and front camera 98 in the storage unit 78, and then transmits it to the server 46 as vehicle driving information. The vehicle driving information transmitted from the ECU 72 to the server 46 includes time-series data of the vehicle 68's position (information representing the vehicle's driving trajectory), time-series data of the amount the vehicle 68's brake pedal is depressed, time-series data of the vehicle 68's steering angle, time-series data of the vehicle 68's speed, time-series data of the vehicle 68's acceleration, and moving images of the area in front of the vehicle 68.

[0049] Since the second mobile terminal 100 consists of well-known smartphones, tablet devices, etc., a detailed explanation of its configuration will be omitted.

[0050] Next, the operation of the first embodiment will be described. As explained earlier, the notification system 10 according to this embodiment is a system that notifies a first user when the first user, who is walking on a road carrying the first mobile terminal 12, approaches a safety check point where safety checks are recommended. In this embodiment, the setting of safety check points is performed by the server 46.

[0051] Here, some locations that should be set as safety confirmation points, such as intersections, are clearly indicated on the map information 60 as, for example, the intersection of multiple roadways, so it is possible to automatically set them as safety confirmation points from the map information 60. On the other hand, vehicle entrances and exits to properties located next to roadways are places with a high risk of traffic safety, but they are not clearly indicated on the map information 60, so it is difficult to automatically set them as safety confirmation points from the map information 60 alone. For this reason, in the first embodiment, the server 46 sets vehicle entrances and exits to properties located next to roadways as safety confirmation points by performing the safety confirmation point setting process described below.

[0052] Specifically, in step 150 of the safety confirmation point setting process shown in Figure 7, the vehicle driving information acquisition unit 62 of the server 46 acquires vehicle driving information from the vehicle's in-vehicle system 70 via the wireless communication network 102. In step 152, the setting unit 64 of the server 46 compares the information representing the vehicle's driving trajectory (time-series data of the vehicle's position) included in the vehicle driving information acquired in step 150 with the map represented by the map information 60. This comparison process makes it possible to determine whether each part of the vehicle's driving trajectory is located on the roadway, as shown in Figure 8 as an example.

[0053] In step 154, the setting unit 64 determines, based on the results of the verification process in step 152, whether all parts of the vehicle 68's trajectory are located on the roadway (i.e., whether there are any parts of the vehicle 68's trajectory that are not located on the roadway). If the determination in step 154 ​​is affirmative, the safety confirmation setting process is terminated. If the determination in step 154 ​​is negative, that is, if there are parts of the vehicle 68's trajectory that are not located on the roadway, the process proceeds to step 156.

[0054] In step 156, the setting unit 64 determines whether the portion of the vehicle 68's trajectory that is not located on the roadway intersects a line along the widthwise edge of the roadway at an angle between a right angle and a predetermined angle. For example, if the vehicle 68 is parked on the shoulder of the roadway, the vehicle 68's trajectory will be approximately parallel to, or nearly parallel to, the widthwise edge of the roadway. In such cases, the determination in step 156 is rejected and the process proceeds to step 180. In step 180, the setting unit 64 terminates the safety confirmation point setting process without setting the portion of the vehicle 68's trajectory that is not located on the roadway as a safety confirmation point.

[0055] On the other hand, as shown in Figure 8 as an example, if there is a plot of land next to the roadway and a vehicle entrance / exit is provided for vehicles to enter and exit the plot of land, the trajectory of a vehicle 68 entering or exiting the plot of land through the vehicle entrance / exit will intersect with a line along the width edge of the roadway at an angle within a predetermined angle from a right angle. Therefore, if the determination in step 156 is affirmed, there is a high probability that there is a plot of land next to the roadway and a vehicle entrance / exit is provided for vehicles to enter and exit the plot of land, so the process proceeds to step 182.

[0056] In step 182, the setting unit 64 sets the intersection point of the vehicle 68's trajectory and the widthwise edge of the roadway (indicated by reference numeral 120 in Figure 8) as a safety confirmation point. In step 190, the transmission unit 66 of the server 46 transmits the information of the safety confirmation point set by the setting unit 64 to the first mobile terminal 12 so that the notification unit 44 will issue a warning notification if the first mobile terminal 12 is located within a predetermined distance from the safety confirmation point. The safety confirmation point setting process ends when the processing in step 190 is completed.

[0057] The above safety confirmation point setting process also sets vehicle entrances and exits to properties located beside the roadway as safety confirmation points. Note that the above safety confirmation point setting process corresponds to one vehicle 68, but in practice it is executed for each of multiple vehicles 68. Furthermore, the safety confirmation point setting process may process vehicle driving information transmitted from the vehicle's onboard system 70 in real time, or it may store vehicle driving information transmitted from the vehicle's onboard system 70 for a certain period and process it in batches.

[0058] Next, referring to Figure 9, the safety confirmation point notification process performed by the terminal control unit 14 of the first mobile terminal 12 will be described. In step 200 of the safety confirmation point notification process, the acquisition unit 40 of the first mobile terminal 12 acquires information on safety confirmation points from the server 46 via the wireless communication network 102 and stores the acquired information on safety confirmation points in the safety confirmation point information storage area 30 of the storage unit 20.

[0059] In step 202, the control unit 42 acquires information on the current location of the first mobile terminal 12 detected by the GNSS device 32. In step 204, the control unit 42 refers to the information on safety confirmation points stored in the safety confirmation point information storage area 30 and calculates the distance D between the current location of the first mobile terminal 12 and the nearest safety confirmation point. Then, in step 206, the control unit 42 determines whether the distance D calculated in step 204 is less than or equal to a predetermined threshold Dth.

[0060] If the distance D is greater than the threshold Dth, the first mobile terminal 12 can determine that it is outside the safety confirmation area with a radius of threshold Dth, centered on the safety confirmation point. Therefore, if the determination in step 206 is denied, the process returns to step 202, and steps 202 to 206 are repeated until the determination in step 206 is affirmed. During this time, no notification is made to the first user carrying the first mobile terminal 12.

[0061] Furthermore, if the first mobile terminal 12 is located within the safety confirmation area, the determination in step 206 is affirmed and the process proceeds to step 208. In step 208, the control unit 42 notifies the first user carrying the first mobile terminal 12 to take precautions by outputting an audio message from the speaker 34 of the notification unit 44 prompting safety confirmation. Note that the notification in step 208 is not limited to the output of an audio message from the speaker 34; the first user may also be alerted by activating the vibrator 36 of the notification unit 44.

[0062] In the next step 210, the control unit 42 acquires a detection signal from the motion sensor 38 and analyzes the actions of the first user carrying the first mobile terminal 12 based on the acquired detection signal. Then, in step 212, the control unit 42 determines whether or not it has detected that the first user has performed a safety action such as pausing, checking left and right, or raising a hand.

[0063] If the determination in step 212 is rejected, the process proceeds to step 214. In step 214, the control unit 42 acquires information on the current location of the first mobile terminal 12 detected by the GNSS device 32. In step 216, the control unit 42 calculates the distance D between the current location of the first mobile terminal 12 and the nearest safety confirmation point. Then, in step 218, the control unit 42 determines whether the distance D calculated in step 216 is less than or equal to a predetermined threshold Dth.

[0064] If the determination in step 218 is affirmative, that is, if the first mobile terminal 12 is located within the safety confirmation area, the process returns to step 210, and steps 210 to 218 are repeated until the determination in step 212 is affirmative or the determination in step 218 is negative. Therefore, while the first mobile terminal 12 is located within the safety confirmation area, it is repeatedly determined whether or not the first user has performed a safe action.

[0065] If it is detected that the first user has taken a safe action while the first mobile terminal 12 is located within the safety confirmation area, the determination in step 212 is affirmed and the system proceeds to step 220. In step 220, the control unit 42 records the determination result that the first user has taken a safe action in the storage unit 20 or the like.

[0066] Furthermore, if it is not detected that the first user has taken a safety action while the first mobile terminal 12 is located within the safety confirmation area, the determination in step 218 is negated when the first mobile terminal 12 leaves the safety confirmation area, and the system proceeds to step 220. In step 220, the control unit 42 records the determination that the first user did not take a safety action in the storage unit 20 or the like.

[0067] In the next step 222, the control unit 42 determines whether the first mobile terminal 12 (carrying the first user) has arrived at a pre-registered destination, such as the school the first user attends or the first user's home. If the determination in step 222 is negative, the process returns to step 200 and repeats the processing from step 200 onward. If the determination in step 222 is positive, the safety confirmation point notification process ends.

[0068] In this embodiment, the determination result recorded in step 220, that is, the determination result indicating whether or not the first user performed safe actions within the safety confirmation area, is first transmitted from the first mobile terminal 12 to the server 46, and then forwarded from the server 46 to the second mobile terminal 100. This makes it possible for the second user carrying the second mobile terminal 100 to confirm whether or not the first user performed safe actions within the safety confirmation area. Furthermore, the information forwarded to the second mobile terminal 100 is not limited to the above determination result; the current location of the first mobile terminal 12 detected by the GNSS device 32 of the first mobile terminal 12 may also be forwarded via the server 46. This makes it possible for the second user carrying the second mobile terminal 100 to know the current location and walking path of the first user carrying the first mobile terminal 12.

[0069] As described above, the first mobile terminal 12 according to the first embodiment is carried by a first user and includes an acquisition unit 40 that acquires information on safety confirmation points from a server 46 that sets vehicle entrances and exits to land next to the roadway as safety confirmation points based on information representing the driving trajectory of a vehicle 68 and map information 60, and a control unit 42 that causes a notification unit 44 to issue a warning when the device (first mobile terminal 12) is located in a safety confirmation area that includes a safety confirmation point for which information has been acquired by the acquisition unit 40. As a result, when the first user carrying the first mobile terminal 12 approaches a safety confirmation area that includes a vehicle entrance and exit to land next to the roadway, a warning notification is issued, which can encourage safety checks, especially at vehicle entrances and exits to land next to the roadway where traffic safety risks are high, and can improve the effect of suppressing traffic accidents.

[0070] Furthermore, in the first embodiment, the acquisition unit 40 acquires safety confirmation point information obtained by the server 46 through a process in which the travel trajectories of vehicles crossing the roadway on the map information 60 are set as safety confirmation points within a predetermined range from the intersection point of the travel trajectory and the widthwise edge of the roadway. As a result, even when there is no information on sidewalks, vehicle entrances and exits to properties next to the roadway are accurately set as safety confirmation areas, and the notification unit issues a warning in the safety confirmation area, thereby further improving the effect of suppressing traffic accidents.

[0071] [Second Embodiment] Next, a second embodiment of this disclosure will be described. Since the second embodiment has the same configuration as the first embodiment, the same reference numerals are used for each part, and the description of the configuration will be omitted. Furthermore, as for the operation of the second embodiment, with reference to Figure 10, only the parts of the safety confirmation point setting process according to the second embodiment that differ from the safety confirmation point setting process described in the first embodiment will be described.

[0072] In the safety confirmation point setting process according to the second embodiment, if the determination in step 156 is affirmative, the process proceeds to step 158. In step 158, the setting unit 64 refers to the vehicle speed information (time-series data of the vehicle speed of vehicle 68) included in the vehicle driving information acquired in step 150, and determines whether the vehicle speed in the portion of the vehicle 68's driving trajectory that is not located on the roadway is less than a predetermined value.

[0073] Since vehicle entrances and exits to properties adjacent to the roadway are generally used at low speeds, if the vehicle speed in the portion of the vehicle 68's trajectory that is not located on the roadway is below a predetermined value, it is highly likely that the portion of the vehicle 68's trajectory that is not located on the roadway is a vehicle entrance or exit to a property adjacent to the roadway. For this reason, if the determination in step 158 is affirmed, the process proceeds to step 182. In step 182, the setting unit 64 sets the intersection point of the vehicle 68's trajectory and the widthwise edge of the roadway as a safety confirmation point.

[0074] On the other hand, if the determination in step 158 is rejected, the process proceeds to step 180, and the safety confirmation point setting process is terminated without setting any portion of the vehicle 68's trajectory that is not located on the roadway as a safety confirmation point.

[0075] Thus, in the second embodiment, vehicle speed information is added to the information representing the vehicle's trajectory, and the acquisition unit 40 acquires information on safety confirmation points from the server 46, which has processed the intersection of the vehicle's trajectory and the widthwise edge of the roadway to set the intersection point of the trajectory and the roadway as a safety confirmation point among the vehicle trajectories of vehicles that intersect the roadway on the map information 60, where the vehicle traveled at a speed below a predetermined value. As a result, even if there is no information on sidewalks, vehicle entrances and exits to the property next to the roadway are accurately set as safety confirmation areas, and the notification unit issues a warning in the safety confirmation area, thereby further improving the effect of suppressing traffic accidents.

[0076] [Third Embodiment] Next, a third embodiment of this disclosure will be described. Since the third embodiment has the same configuration as the first embodiment, the same reference numerals are used for each part and the description of the configuration will be omitted. Furthermore, as for the operation of the third embodiment, with reference to Figure 11, only the parts of the safety confirmation point setting process according to the third embodiment that differ from the safety confirmation point setting process described in the first embodiment will be described.

[0077] In the safety confirmation point setting process according to the third embodiment, if the determination in step 154 ​​is affirmative, the process proceeds to step 160. In step 160, the setting unit 64 acquires time-series position data of the first mobile terminal 12 detected by the GNSS device 32, that is, information representing the walking trajectory of the first mobile terminal 12 (the first user carrying it), from the first mobile terminal 12. Figure 12 shows an example of the walking trajectory of the first mobile terminal 12 as a dashed line.

[0078] In the next step 162, the setting unit 64 determines whether the portion of the vehicle 68's trajectory that is not located on the roadway intersects with the walking trajectory of the first mobile terminal 12 at an angle within a predetermined angle from a right angle. If the determination in step 162 is negative, the process proceeds to step 180, in which the setting unit 64 terminates the safety confirmation point setting process without setting the portion of the vehicle 68's trajectory that is not located on the roadway as a safety confirmation point.

[0079] On the other hand, as shown in Figure 8 as an example, if a plot of land exists next to a roadway and a vehicle entrance / exit is provided for vehicles to enter and exit the plot, the trajectory of a vehicle 68 entering or exiting the plot through the vehicle entrance / exit will intersect with the walking trajectory of the first mobile terminal 12 at an angle within a predetermined angle from a right angle. Therefore, if the determination in step 162 is affirmed, there is a high probability that a plot of land exists next to a roadway and a vehicle entrance / exit is provided for vehicles to enter and exit the plot, so the process proceeds to step 184.

[0080] In step 184, the setting unit 64 sets the intersection point of the vehicle 68's travel trajectory and the first mobile terminal 12's walking trajectory (indicated by reference numeral 122 in Figure 12) as a safety confirmation point. After completing the process in step 184, the process proceeds to step 190.

[0081] Thus, in the third embodiment, the acquisition unit 40 acquires information on safety confirmation points from the server 46, which has undergone a process to set the intersection points of the vehicle's driving trajectory (walking trajectory of the first mobile terminal 12) with the sidewalk on the map information 60 represented by the sidewalk information as safety confirmation points. As a result, vehicle entrances and exits to the property next to the roadway are accurately set as safety confirmation areas using the sidewalk information, and the notification unit 44 issues a warning in the safety confirmation area, thereby further improving the effect of suppressing traffic accidents.

[0082] In the third embodiment, the walking trajectory of the first mobile terminal 12 (carrying the first user) is used as sidewalk information, and the intersection of the vehicle 68's driving trajectory and the walking trajectory of the first mobile terminal 12 is set as a safety confirmation point. However, this disclosure is not limited thereto, and if the map information 60 includes sidewalk information, the intersection of the vehicle 68's driving trajectory and the sidewalk represented by the sidewalk information included in the map information 60 may be set as the safety confirmation point.

[0083] [Fourth Embodiment] Next, the first of this disclosure 4 The embodiments will now be described. Since the fourth embodiment has the same configuration as the first embodiment, the same reference numerals are used for each part, and the description of the configuration will be omitted. Furthermore, as for the operation of the fourth embodiment, with reference to Figure 13, only the parts of the safety confirmation point setting process according to the fourth embodiment that differ from the safety confirmation point setting process described in the first embodiment will be described.

[0084] In the safety confirmation point setting process according to the fourth embodiment, if the determination in step 156 is affirmative, the process proceeds to step 164. In step 164, the setting unit 64 sets the intersection point of the vehicle 68's travel trajectory and the widthwise edge of the roadway as a vehicle entrance / exit to the site next to the roadway. In step 165, the setting unit 64 acquires vehicle travel information for multiple vehicles that have traveled near the set vehicle entrance / exit.

[0085] In step 166, the setting unit 64 counts the number of vehicles (Figure 14) that entered from the lane furthest from the vehicle entrance / exit set in step 164, and the number of vehicles that entered from the lane closest to the vehicle entrance / exit, based on the vehicle driving information acquired in step 165. Then, based on the counted number of vehicles, it calculates the percentage of vehicles entering from the lane furthest from the vehicle entrance / exit.

[0086] In the next step 168, the setting unit 64 determines whether the proportion of vehicles entering from the lane furthest from the vehicle entrance / exit set in step 164 is greater than or equal to a predetermined value. Among the vehicle entrances / exits to the property next to the roadway, locations where there is a high proportion of vehicles entering from the lane furthest from the entrance / exit are presumed to be locations with a higher traffic safety risk. Therefore, if the determination in step 168 is affirmative, the process proceeds to step 186, in which the setting unit 64 sets the vehicle entrance / exit set in step 164 as a safety confirmation point.

[0087] Furthermore, if the determination in step 168 is rejected, the process proceeds to step 170. In step 170, the setting unit 64 calculates the frequency of vehicle stopping in the lane closest to the vehicle entrance / exit set in step 164 (see also "Stopping" in Figure 14) based on the vehicle driving information acquired in step 165.

[0088] In the next step 172, the setting unit 64 determines whether the frequency of vehicle stopping in the lane closest to the vehicle entrance / exit is greater than or equal to a predetermined value. Locations where the frequency of vehicle stopping in the lane closest to the vehicle entrance / exit is greater than or equal to a predetermined value are presumed to be locations with a high risk of so-called "thank you accidents." Therefore, if the determination in step 172 is affirmative, the system proceeds to step 186, in which step 186, the setting unit 64 sets the vehicle entrance / exit set in step 164 as a safety confirmation point. If the determination in step 172 is negative, the system proceeds to step 180, and the vehicle entrance / exit set in step 164 is not set as a safety confirmation point.

[0089] Thus, in the fourth embodiment, the acquisition unit 40 acquires information on safety confirmation points that have undergone processing in the server 46, where if the proportion of vehicles entering from the lane furthest from the vehicle entrance / exit to the site next to the roadway is greater than or equal to a predetermined value, the vehicle entrance / exit is set as a safety confirmation point, and if the proportion of vehicles entering from the lane furthest from the vehicle entrance / exit is less than the predetermined value, the vehicle entrance / exit is not set as a safety confirmation point. As a result, among the vehicle entrances / exits to the site next to the roadway, locations where there are many vehicles entering from the lane furthest from the vehicle entrance / exit, i.e., locations estimated to have a higher traffic safety risk, are accurately set as safety confirmation areas. Therefore, the notification unit 44 issues a warning in these safety confirmation areas, which further improves the effect of suppressing traffic accidents.

[0090] Furthermore, in the fourth embodiment, the acquisition unit 40 acquires information on safety confirmation points from the server 46 after processing the following: if the frequency of vehicles stopping within a predetermined range from the vehicle entrance / exit in the lane closest to the vehicle entrance / exit to the property next to the roadway is greater than or equal to a predetermined value, the vehicle entrance / exit is set as a safety confirmation point; if the frequency of vehicles stopping is less than the predetermined value, the vehicle entrance / exit is not set as a safety confirmation point. As a result, among the vehicle entrances / exits to the property next to the roadway, locations that are estimated to have a high risk of so-called "thank you accidents," that is, locations that are estimated to have a higher traffic safety risk, are accurately set as safety confirmation areas. Therefore, the notification unit 44 issues a warning in these safety confirmation areas, which further improves the effect of suppressing traffic accidents.

[0091] In the above embodiment, a method was described in which the intersection of the vehicle's trajectory and the sidewalk on the map information 60, which represents the widthwise edge of the roadway or the sidewalk, is set as the safety confirmation point. However, this disclosure is not limited thereto. For example, after setting the above intersection as the safety confirmation point, the server 46 may further set an area with a radius of threshold Dth centered on the set safety confirmation point as the safety confirmation area, and transmit the information of the set safety confirmation area to the first mobile terminal 12.

[0092] Furthermore, although the above embodiment describes a configuration in which the safety confirmation area is a circular area centered on the safety confirmation point, this disclosure is not limited thereto. For example, the safety confirmation area may be rectangular, elliptical, or otherwise, and may be eccentric with respect to the safety confirmation point.

[0093] Furthermore, in the above embodiment, an embodiment was described in which the intersection of the vehicle's travel trajectory and the sidewalk on the map information 60, which represents the widthwise end of the roadway or the sidewalk, is set as a safety confirmation point, but this disclosure is not limited thereto. For example, the server 46 may recognize the above intersection as a vehicle entrance / exit to a site next to the roadway and perform processing such as adding the recognized vehicle entrance / exit to the site next to the roadway to the map information 60. Furthermore, if the proportion of vehicles entering from the lane furthest from the vehicle entrance / exit to the property at the end of the roadway exceeds a predetermined value, the vehicle entrance / exit may be recognized as a vehicle entrance / exit with a high traffic safety risk, and if the proportion of vehicles entering from the lane furthest from the vehicle entrance / exit may be less than the predetermined value, the vehicle entrance / exit may be recognized as a vehicle entrance / exit with a low traffic safety risk. In addition, if the frequency of vehicles stopping within a predetermined range from the vehicle entrance / exit in the lane closest to the vehicle entrance / exit may be greater than a predetermined value, the vehicle entrance / exit may be recognized as a vehicle entrance / exit with a high traffic safety risk, and if the frequency of vehicles stopping is less than the predetermined value, the vehicle entrance / exit may be recognized as a vehicle entrance / exit with a low traffic safety risk.

[0094] The following additional information is disclosed regarding the embodiments described above.

[0095] (Note 1) An information processing device including a recognition unit that recognizes vehicle entrances and exits to a plot of land adjacent to a roadway based on information representing the vehicle's travel trajectory and map information. According to Appendix 1, it is possible to identify all vehicle entrances and exits to the property adjacent to the roadway.

[0096] (Note 2) The recognition unit is an information processing device as described in Appendix 1, which recognizes as a vehicle entrance / exit area an area within a predetermined range from the intersection point of the vehicle's travel trajectory and the widthwise end of the roadway on the map information. According to Appendix 2, even when sidewalk information is unavailable, the system can accurately recognize vehicle entrances and exits to properties adjacent to the roadway.

[0097] (Note 3) The information representing the vehicle's trajectory includes additional information representing the vehicle's speed. The recognition unit recognizes, among the driving trajectories of vehicles crossing the roadway on the map information, the driving trajectory of a vehicle traveling at a speed below a predetermined value, and recognizes the area within a predetermined range from the intersection point of the driving trajectory and the widthwise end of the roadway as the vehicle entrance / exit, as the vehicle entrance / exit, as described in Appendix 2. According to Appendix 3, even when sidewalk information is unavailable, the system can accurately recognize vehicle entrances and exits to properties adjacent to the roadway.

[0098] (Note 4) The recognition unit is an information processing device as described in Appendix 1, which recognizes the area within a predetermined range from the intersection point of the vehicle's trajectory and the sidewalk as the vehicle entrance / exit, based on the trajectory of a vehicle crossing the sidewalk on the map information represented by the sidewalk information. According to Appendix 4, if sidewalk information is available, using that sidewalk information allows for accurate recognition of vehicle entrances and exits to properties adjacent to roadways.

[0099] (Note 5) The information processing device according to any one of the appendices 1 to 4, wherein the recognition unit recognizes the vehicle entrance as a vehicle entrance with a high traffic safety risk if the proportion of vehicles entering from the lane furthest from the vehicle entrance is greater than or equal to a predetermined value, and recognizes the vehicle entrance as a vehicle entrance with a low traffic safety risk if the proportion of vehicles entering from the lane furthest from the vehicle entrance is less than or equal to a predetermined value. According to Appendix 5, the traffic safety risk at a vehicle entrance / exit can be recognized based on the proportion of vehicles entering from the lane furthest from the entrance / exit.

[0100] (Note 6) The information processing device according to any one of the appendices 1 to 4, wherein the recognition unit recognizes the vehicle entrance as a vehicle entrance with a high traffic safety risk if the frequency of vehicles stopping within a predetermined range from in front of the vehicle entrance in the lane closest to the vehicle entrance is greater than or equal to a predetermined value, and recognizes the vehicle entrance as a vehicle entrance with a low traffic safety risk if the frequency of vehicles stopping is less than the predetermined value. According to Appendix 6, the traffic safety risk at a vehicle entrance / exit can be recognized based on the frequency of vehicles stopping in the lane closest to the entrance / exit. [Explanation of Symbols]

[0101] 10. Notification System 12. First mobile terminal 40 Acquisition Department 42 Control Unit 44 News Department 46 servers 62 Vehicle Driving Information Acquisition Unit 64 Settings Section 66 Transmitter 68 vehicles 70 In-vehicle systems 88 GNSS equipment 94 Vehicle speed sensor

Claims

1. Carried by the possessor, An acquisition unit acquires information on a safety confirmation area from an information processing device that sets a safety confirmation area as a vehicle entrance / exit to a site adjacent to a roadway, including a sidewalk, based on information representing the vehicle's trajectory, information representing the vehicle speed in the portion of the vehicle's trajectory that is not located on the roadway, and map information. A control unit that causes a notification unit to issue a warning when the aircraft is located in the safety confirmation area where information has been acquired by the acquisition unit, A device that includes this.

2. The terminal according to claim 1, wherein the acquisition unit acquires information of the safety confirmation area, which is obtained by the information processing device through a process that sets the area within a predetermined range from the intersection point of the driving trajectory of a vehicle crossing the roadway on the map information to the safety confirmation area.

3. Carried by the possessor, An information processing device sets vehicle entrances and exits to a site beside the roadway as safety confirmation areas based on information representing the vehicle's travel trajectory and map information, and an acquisition unit acquires information on the safety confirmation area from the information processing device. A control unit that causes a notification unit to issue a warning when the aircraft is located in the safety confirmation area where information has been acquired by the acquisition unit, Includes, The information representing the vehicle's trajectory includes additional information representing the vehicle's speed. The acquisition unit is a terminal that acquires information on the safety confirmation area, which is obtained by the information processing device through a process that sets the area within a predetermined range from the intersection point of the vehicle's travel trajectory and the widthwise edge of the roadway as the safety confirmation area, for travel trajectories of vehicles that cross the roadway on the map information where the vehicle traveled at a speed below a predetermined value.

4. The terminal according to claim 1, wherein the acquisition unit acquires information of the safety confirmation area, which is obtained by the information processing device through a process that sets the area within a predetermined range from the intersection point of the driving trajectory of a vehicle that intersects the sidewalk on the map information represented by the sidewalk information as the safety confirmation area.

5. Carried by the possessor, An information processing device sets vehicle entrances and exits to a site beside the roadway as safety confirmation areas based on information representing the vehicle's travel trajectory and map information, and an acquisition unit acquires information on the safety confirmation area from the information processing device. A control unit that causes a notification unit to issue a warning when the aircraft is located in the safety confirmation area where information has been acquired by the acquisition unit, Includes, The acquisition unit is a terminal that acquires information about the safety confirmation area after the information processing device has performed a process in which, if the proportion of vehicles entering from the lane furthest from the vehicle entrance / exit is greater than or equal to a predetermined value, the vehicle entrance / exit is set as a safety confirmation area, and if the proportion of vehicles entering from the lane furthest from the vehicle entrance / exit is less than the predetermined value, the vehicle entrance / exit is not set as a safety confirmation area.

6. Carried by the possessor, An information processing device sets vehicle entrances and exits to a site beside the roadway as safety confirmation areas based on information representing the vehicle's travel trajectory and map information, and an acquisition unit acquires information on the safety confirmation area from the information processing device. A control unit that causes a notification unit to issue a warning when the aircraft is located in the safety confirmation area where information has been acquired by the acquisition unit, Includes, The acquisition unit is a terminal that acquires information about the safety confirmation area after the information processing device has performed a process in which, if the frequency of vehicles stopping within a predetermined range from in front of the vehicle entrance / exit in the lane closest to the vehicle entrance / exit is greater than or equal to a predetermined value, the vehicle entrance / exit is set as a safety confirmation area, and if the frequency of vehicles stopping is less than a predetermined value, the vehicle entrance / exit is not set as a safety confirmation area.

7. A setting unit that sets a vehicle entrance / exit to a site adjacent to a roadway, including a sidewalk, as a safety confirmation area based on information representing the vehicle's trajectory, information representing the vehicle speed in the portion of the trajectory not located on the roadway, and map information. A transmission unit transmits information about the safety confirmation area, set by the setting unit, to the terminal, so that when the terminal, which is carried by the owner and includes a notification unit, is located in the safety confirmation area, the notification unit will issue a warning notification. Information processing device including

8. The information processing device according to claim 7, wherein the setting unit sets the area within a predetermined range from the intersection point of the driving trajectory of a vehicle crossing a roadway on the map information to the widthwise end of the roadway to be the safety confirmation area.

9. A setting unit that sets vehicle entrances and exits to a plot of land next to the roadway as a safety confirmation area based on information representing the vehicle's travel trajectory and map information, A transmission unit transmits information about the safety confirmation area, set by the setting unit, to the terminal, so that when the terminal, which is carried by the owner and includes a notification unit, is located in the safety confirmation area, the notification unit will issue a warning notification. Includes, The information representing the vehicle's trajectory includes additional information representing the vehicle's speed. The setting unit is an information processing device that sets the area within a predetermined range from the intersection point of the vehicle's travel trajectory and the widthwise edge of the roadway to the safety confirmation area, for the travel trajectory of a vehicle that traveled at a speed below a predetermined value among the travel trajectories of vehicles that cross the roadway on the map information.

10. The information processing device according to claim 7, wherein the setting unit sets the area within a predetermined range from the intersection point of the vehicle's trajectory crossing the sidewalk on the map information represented by the sidewalk information as the safety confirmation area.

11. A setting unit that sets vehicle entrances and exits to a plot of land next to the roadway as a safety confirmation area based on information representing the vehicle's travel trajectory and map information, A transmission unit transmits information about the safety confirmation area, set by the setting unit, to the terminal, so that when the terminal, which is carried by the owner and includes a notification unit, is located in the safety confirmation area, the notification unit will issue a warning notification. Includes, The setting unit is an information processing device that sets the vehicle entrance / exit as a safety confirmation area if the proportion of vehicles entering from the lane furthest from the vehicle entrance / exit is greater than or equal to a predetermined value, and does not set the vehicle entrance / exit as a safety confirmation area if the proportion of vehicles entering from the lane furthest from the vehicle entrance / exit is less than the predetermined value.

12. A setting unit that sets vehicle entrances and exits to a plot of land next to the roadway as a safety confirmation area based on information representing the vehicle's travel trajectory and map information, A transmission unit transmits information about the safety confirmation area, set by the setting unit, to the terminal, so that when the terminal, which is carried by the owner and includes a notification unit, is located in the safety confirmation area, the notification unit will issue a warning notification. Includes, The setting unit is an information processing device that sets the vehicle entrance / exit as a safety confirmation area if the frequency of vehicles stopping within a predetermined range from the vehicle entrance / exit in the lane closest to the vehicle entrance / exit is greater than or equal to a predetermined value, and does not set the vehicle entrance / exit as a safety confirmation area if the frequency of vehicles stopping is less than the predetermined value.

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