JP4806911B2 - Destination road related information acquisition method and destination road related information acquisition device - Google Patents

Description

  The present invention relates to a method and apparatus for acquiring road-related information such as curvature and gradient of a road ahead of a vehicle, and more particularly to a method of acquiring road-related information of a destination from an oncoming vehicle.

Various methods for acquiring road-related information (congestion information, road gradient information, curve information, etc.) ahead of the lane in which the host vehicle is running are considered. For example, in Patent Document 1, a display device with a communication function is installed at a certain distance on the road side, and detection information such as a rudder angle sensor and a vehicle speed sensor mounted on the vehicle is transmitted to the road side display device. The roadside display device determines whether there is an accident or traffic jam based on information acquired from each vehicle, and displays the road conditions ahead of the driver.
Japanese Patent Laid-Open No. 6-180795

However, in the method described in Patent Document 1, it is necessary to install a display device having many communication functions on the road side, which increases costs. In addition, on roads without a display device, it is naturally impossible to know the road conditions ahead.
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a destination road related information acquisition method and a destination road related information capable of notifying a driver of road related information ahead without providing roadside equipment. To provide an acquisition device.

The travel destination road related information acquisition method according to claim 1 acquires a road related information acquisition means for acquiring road related information related to the travel road while the host vehicle is traveling, and an information acquisition position by the road related information acquisition means. Position acquisition means, communication means for performing data communication with other vehicles, the road related information acquisition means of the own vehicle and the road related information acquired by the position acquisition means and the information acquisition position and data from the other vehicle by data communication Storage means for storing the acquired road-related information and the information acquisition position so as to be distinguishable, and acquiring the road-related information and the information between oncoming vehicles traveling on one road in opposite directions. The other vehicle that transmits and receives the position via the communication means and receives the road-related information and the information acquisition position from one of the oncoming vehicles. But the communication via the communication means with another vehicle coming traveling from after the one vehicle, when receiving the designation of the travel destination road you want to get the road-related information from the another vehicle, the storage The road-related information acquired by the host vehicle after transmitting the road-related information and the information acquisition position for the designated destination road out of the road-related information and the information acquisition position stored in the means and it transmits the information acquisition position in said another vehicle, when not receiving the designation of the travel destination road you want to get the road-related information from said another vehicle, said road-related information and the information acquired is acquired by the vehicle sending located only on said another vehicle, said another vehicle, the road-related information and the transmitted from the other vehicle for traveling destination road and the designated The broadcast acquisition position, and acquires the road-related information of the traveling destination road vehicle.

Further, the travel destination road related information acquisition device according to claim 2 is mounted on a vehicle, road related information acquisition means for acquiring road related information related to the travel road while the host vehicle is traveling, mounted on the vehicle, and the road Position acquisition means for acquiring an information acquisition position by related information acquisition means, communication means mounted on the vehicle and performing data communication with other vehicles, the road-related information acquisition means of the host vehicle mounted on the vehicle, and the vehicle The road-related information acquired by the position acquisition means and the information acquisition position and the road-related information acquired from the other vehicle by data communication and the information acquisition position are stored in a distinguishable manner, and mounted on the vehicle, Road designation means for designating a destination road from which the road-related information is to be acquired, and an oncoming vehicle mounted on the vehicle and traveling in the opposite direction on the traveling road of the host vehicle. The stored the road-related information and the information acquisition position information and the storage means to specify the specified the travel destination road by the road specifying means and transmitted from said communication means, said communication means being sent from the oncoming vehicle Communication control means for storing the road-related information and the information acquisition position received by the storage means, and the road-related information mounted on the vehicle and stored by the storage means. A destination road-related information selection unit that selects road-related information, and the communication control unit stores, in the storage unit, a designation of a destination road from which the road-related information is to be acquired from the oncoming vehicle. the road-related information about the travel destination road where there is specified from the oncoming vehicle from among the stored the road-related information and the information acquisition position After transmitting the pre said information acquisition position, when the sending of the road-related information and the information acquisition position acquired in the vehicle, does not receive the designation of the travel destination road you want to get the road-related information from the opposing vehicle, Only the road related information acquired by the host vehicle and the information acquisition position are transmitted to the oncoming vehicle .

According to the structure of the above Claim 1 and 2, the road relevant information of the traveling destination of the own vehicle can be acquired from the oncoming vehicle. For this reason, it is not necessary to install a roadside device.
In particular, in the travel destination road related information acquisition device according to claim 2, road designation means for designating a travel destination road for which the road related information is to be acquired for the oncoming vehicle is mounted on the vehicle, and the storage means The road-related information and the information acquisition position acquired by the host vehicle are stored so as to be distinguishable from the road-related information and the information acquisition position acquired from another vehicle, and the communication control unit is configured to distinguish the road-related information from the oncoming vehicle. When the destination road for which information is to be acquired is designated, the road-related information and the information acquisition position for the designated destination road are transmitted from the road-related information and the information acquisition position stored in the storage means. Then, since only the road-related information and the information acquisition position acquired by the host vehicle are transmitted, the road-related information and information acquisition position received from other vehicles are When sending and receiving road-related information and information acquisition position with an oncoming vehicle under the circumstances of storing in the memory means, road-related information and information acquisition obtained from other vehicle with road-related information and information acquisition position acquired from the oncoming vehicle As a position, it is possible to prevent the occurrence of a problem of transmission to the oncoming vehicle.

In the travel destination road related information acquisition device according to claim 3 , a road for acquiring a road form from the map data storage means for navigation and the road related information and the information acquisition position stored in the storage means in the vehicle. The road related information includes curvature and gradient information, and the road form determining means is acquired from the road related information and the information acquisition position stored in the storage means. When the road form stored in the map data storage means is different, the road form data in the map data storage means is changed to the acquired road form .
For example, when creating map data from an aerial photograph or the like, the curvature of the aerial photograph is often defaulted and may differ from an actual road. According to the configuration of the third aspect, such map data can be corrected to the one on an actual road.

As in the travel destination road related information acquisition device according to claim 4, the communication control means transmits the road related information and the information acquisition position acquired by the own vehicle in order from the latest one and acquired from another vehicle. The road related information and the information acquisition position may be transmitted only for the road designated as the travel destination road from which the road related information is to be acquired from the oncoming vehicle.

Hereinafter, an embodiment in which the present invention is applied to a car navigation apparatus will be described with reference to the drawings.
As shown in FIG. 1, the car navigation device 1 includes a control unit 2, an operation unit 3, a display unit 4, a position detection unit 5, a traveling direction detection unit 6, a gradient detection unit 7, and a map data storage unit 8. . The control unit 2 performs overall control of the car navigation device 1 and is constituted by a microcomputer.

  The operation unit 3 includes a mechanical switch provided around the display screen of the display unit 4 and a touch panel provided on the display screen. The user sets the destination and the like by operating the operation unit 4. The display unit 4 includes a display screen composed of a color liquid crystal, and displays a map, guidance information to a destination, road traffic congestion information, and the like on the display screen. The position detection unit 5 includes a GPS receiver and the like, and detects the position and time of the host vehicle from position information and time information included in the GPS signal. The traveling direction detection unit 6 includes a gyroscope or the like, and detects the traveling direction of the host vehicle. The gradient detector 7 detects the gradient of the traveling road of the host vehicle using a gravity sensor or the like.

  The map data storage unit 8 includes a DVD and its drive device. In map data stored on a DVD or the like, roads are represented by nodes and links. The link is represented by a vector, and has information on the length and direction from the node. A link ID (link identification information) is attached to each link, and each link is specified by the link ID. Further, the map data includes road form information representing the curvature, gradient, etc. of the road (link). The map data written on the DVD can be rewritten by the drive device.

  The car navigation device 1 includes an information storage unit 9, a transmission data generation unit 10, a reception data processing unit 11, an inter-vehicle communication unit 12, a road form update determination unit 13, a front road shape generation unit 14, and an in-vehicle communication unit 15. I have. The information storage unit 9 stores road-related information detected by the own vehicle and also stores road-related information acquired through communication with other vehicles. In this case, the road-related information includes road gradient, curve curvature, passage speed, and road surface friction coefficient (hereinafter referred to as road surface μ). And this road relevant information is memorize | stored like FIG. 2 with the position which acquired the said information, road link ID, and time. In the following description, information of FIG. 2 as a whole including road-related information and the position and time at which the related information is acquired is referred to as road information. And the information storage part 9 memorize | stores separately the detection information in the own vehicle, and the detection information from another vehicle.

  The transmission data generation unit 10 functions as a communication control unit, collects road information from the host vehicle and road information from other vehicles stored in the information storage unit 9 as transmission data, and transmits the transmission data via the inter-vehicle communication unit 12. . In addition, when a road (link ID) for which road information is to be acquired is designated from the control unit 2 as a road designation unit, the transmission data generation unit 10 collects the designated road as transmission data. In this case, the transmission data generation unit 10 creates transmission data so that road information in the own vehicle is transmitted in order from the latest acquisition time, and the other vehicle (described later) for road information from other vehicles. As described above, only road information about roads requested by oncoming vehicles is collected as transmission data.

  The reception data processing unit 11 functions as a communication control unit, confirms data received from other vehicles by the inter-vehicle communication unit 12, overlaps with road information stored in the information storage unit 9, acquisition time of road information, etc. In consideration of the above, only necessary information is filtered and stored in the information storage unit 9. Here, for example, if the road information acquired within a predetermined time is already stored, the filtering does not store the received road information in the information storage unit 9. From the road information in which the received road information is stored. If the information is also new, the road information stored in the information storage unit 9 is deleted and the received road information is newly stored. Within a certain distance from the acquisition position of the road information stored in the information storage unit 9 For example, the received road information is not stored.

  The inter-vehicle communication unit 12 performs data communication with other vehicles and transmits / receives road information between the vehicles. In this case, the inter-vehicle communication unit 12 determines whether or not the other vehicle that has established the communication is a vehicle (an oncoming vehicle) traveling in the opposite direction on the traveling road of the own vehicle when the communication with the other vehicle is established. (Oncoming vehicle determination means). For example, even if the roads are the same, the link IDs of the roads in the lanes facing each other are different, so the link IDs of the driving lanes are transmitted and received between the vehicles, and the map data in the map data storage unit 8 If the link ID received from is searched, it can be determined whether the vehicle is an oncoming vehicle.

  The road form update determination unit 13 functions as a road form determination unit, acquires a road position, a road shape, a curvature of a curve, and a road gradient from road information stored in the information storage unit 9, and a map data storage unit for the same road If the position, shape, curve curvature, and road gradient stored in FIG. 8 are different, the map data in the map data storage unit 8 is corrected based on the road information in the information storage unit 9.

  The front road shape generation unit 14 acquires the current position information of the host vehicle from the control unit 2, searches the map data storage unit 8, and acquires the link ID of the front road. The in-vehicle communication unit 15 is for communicating with the car navigation device 1 and other devices provided in the vehicle. In the present embodiment, an ABS-ECU (Antiblock Bracket System-Electronic Control Unit) 16 and a headlight are provided. It communicates with the lamp ECU 17.

  The ABS-ECU 16 includes a vehicle speed detection unit 18, a road surface μ detection unit 19, and an in-vehicle communication unit 20. The headlamp ECU 17 includes a steering angle detection unit 21, a headlight control unit 22, and an in-vehicle communication unit 23. I have. In the ABS-ECU 16, the vehicle speed detection unit 18 counts the number of rotations of the axle and calculates the vehicle speed. The road surface μ detector 19 calculates the road surface μ from the traction of the engine and the actual axle rotation. The in-vehicle communication unit 20 transmits the vehicle speed and the road surface μ detected by the vehicle speed detection unit 18 and the road surface μ detection unit 19 to the car navigation apparatus 1 as information acquired by the own vehicle.

  In the headlamp ECU 17, the steering angle detector 21 detects the steering operation angle. The in-vehicle communication unit 23 transmits the steering operation angle detected by the steering angle detection unit 21 to the car navigation device 1 as information acquired by the own vehicle, and receives data on the shape of the front road from the car navigation device 1. The headlamp control unit 22 controls the direction of the headlamp from the steering operation angle detected by the steering angle detection unit 21 and the shape of the front road received from the car navigation device 1.

Next, the operation of the above configuration will be described with reference to the flowchart of FIG.
When the control unit 2 starts executing the information acquisition program, as shown in FIG. 3, until the communication with the oncoming vehicle is established, the operation of acquiring information about the traveling road from each sensor is repeated at regular intervals. Execute. In this information acquisition, the control unit 2 detects the vehicle speed by the vehicle speed detection unit 18, the road surface μ by the road surface μ detection unit 19, the steering operation angle by the steering angle detection unit 21, the current position by the position detection unit 5 (information acquisition position). ) And the current time (information acquisition time), the traveling direction by the traveling direction detection unit 6, and the road gradient by the gradient detection unit 7.

  Then, the control unit 2 accesses the map data storage unit 8 and acquires the road link ID currently traveling, the road link ID ahead of the traveling direction, the road link ID of the opposite lane, and the like from the current position and the traveling direction. Based on these acquired information, it is memorize | stored in the information storage part 9 as information acquired with the own vehicle as shown in FIG. 2 (above, step S1). The curve curvature is obtained by calculation from the vehicle speed and the steering angle.

  When the inter-vehicle communication unit 12 communicates with another vehicle, the inter-vehicle communication unit 12 acquires the road link ID of the lane in which the host vehicle is traveling and the road link ID of the opposite lane from the control unit 2, and the road link of the traveling lane. While transmitting the ID, the road link ID of the lane in which the other vehicle is traveling is received from the other vehicle. If the road link ID of the travel lane received from the other vehicle matches the road link ID of the opposite lane acquired from the control unit 2, it is determined that the vehicle is traveling in the opposite lane. Communication link is established ("YES" in step S2). Of course, when the road link ID of the traveling lane received from another vehicle does not match the road link ID of the opposite lane acquired from the control unit 2, the communication with the vehicle is disconnected ("NO" in step S2). ]), The process returns to step S1.

  When communication with the oncoming vehicle is established, the control unit 2 determines whether or not a road link ID for which road information is desired to be acquired from the opponent vehicle (oncoming vehicle) is specified (step S3). Transition to normal information transmission / reception thereafter. When the road link ID for which road information is desired to be acquired is designated, the control unit 2 determines whether or not the road information of the designated road link ID is stored in the information storage unit 9 (step S4). When the road information of the specified road link ID is stored, the transmission data generation unit 10 specifies from the information storage unit 9 (both road information acquired from the own vehicle and road information acquired from other vehicles). The road information of the road link ID thus selected is selected and collected as transmission data and transmitted from the vehicle-to-vehicle communication unit 12 to the partner vehicle (step S5), and the process proceeds to normal information transmission / reception. In addition, when the road information of the road link ID designated in the information storage unit 9 is not stored in the information storage unit 9, the transmission data generation unit 10 transmits that there is no information to the partner vehicle from the inter-vehicle communication unit 12 (step S6). ), Shift to normal information transmission / reception.

  When shifting to normal information transmission / reception as described above, the control unit 2 sends the road link ID (scheduled travel route) of the travel destination to the transmission data generation unit 10, and the transmission data generation unit 10 The fact that the link ID road information is requested is compiled into transmission data as shown in FIG. 4 and transmitted from the inter-vehicle communication unit 12 to the partner vehicle (step S7). When the route link ID of the travel destination provides route guidance to the destination, the road link ID of the travel destination is searched from the map data according to the route. If route guidance is not being performed, the travel destination is estimated from the current position by the direction of travel and the operation of a turn indicator for turning left and right, and the road link ID of the travel destination is searched with reference to the map data. Further, as shown in FIG. 4, it is also possible to request traffic jam information in a wide area (a road whose passing speed is equal to or lower than a predetermined speed) without specifying a road link ID.

  When the road information of the requested road link ID is transmitted from the counterpart vehicle as data as shown in FIG. 5, the inter-vehicle communication unit 12 receives this and sends it to the received data processing unit 11. The reception data processing unit 11 filters the road information of the designated road link ID sent from the partner vehicle by making a request to the partner vehicle as described above, and stores it in the information storage unit 9 (step S8).

  Next, the transmission data generation unit 10 collects the road information acquired by the own vehicle stored in the information storage unit 9 as transmission data and transmits it from the inter-vehicle communication unit 12 to the partner vehicle (step S9). Thereafter, when the road information acquired by the partner vehicle is transmitted from the partner vehicle, the inter-vehicle communication unit 12 receives this and sends it to the reception data processing unit 11. The reception data processing unit 11 filters the road information sent from the opponent vehicle as described above, stores it in the information storage unit 9 (step S10), and returns to step S1.

When the road information ahead in the traveling direction is acquired in this way and stored in the information storage unit 9, the stored road information of the destination is selected and read by the control unit 2 or the road form update determination unit 13. (Travel destination road selection means), which is used for controlling the light distribution of the headlamps or correcting the map data stored in the map data storage unit 8. The control unit 2, the travel destination of the road from the traveling speed information of the traveling destination road or can run as usual, or the traveling speed traffic jam occurs and determines such as for example whether or not reduced (decision Means), and displayed on the display unit 4.

  An example of acquiring road information ahead in the traveling direction by sending and receiving road information with the oncoming vehicle as described above will be specifically described with reference to FIG. 8, FIG. 7, and FIG. 8 showing a communication sequence in FIG. 6 and 7 acquire the road-related information of the road link L23 in the traveling direction that the C car wants to know as the information of the road on which the A car traveled. This is an example in which the C car is acquired via a B car that is an oncoming car.

  That is, at time T1 in FIG. 6, the A car is directed from the node N4 to N3 via N2, and is different from the B car that is the oncoming vehicle on the road link L23. And the A vehicle has memorize | stored the information to the middle of the road links L42 and L23 as the road relevant information acquired with the own vehicle. On the other hand, the vehicle B passes the node N3 through the node N2, and passes the vehicle A which is an oncoming vehicle on the road link L32 on the way to the node N1. And the B vehicle has memorize | stored the information to the middle of the road link L32 as the road relevant information acquired with the own vehicle.

  When vehicle A and vehicle B pass each other, they communicate with each other (step P1 in FIG. 8). First, vehicle B transmits the planned travel route of the host vehicle and requests road information on the route (step P2). In response to this request, the A vehicle transmits road information requested by the B vehicle (step P3). Next, the A vehicle transmits the travel schedule route of the host vehicle and requests road information on the route (step P4). In response to this request, the B car transmits road information of the road requested by the A car (step P5). Thereafter, the road information acquired by the A vehicle with the own vehicle is transmitted to the B vehicle (step P6), and the road information acquired by the B vehicle with the own vehicle is transmitted to the A vehicle (step P6).

  In the case of FIG. 6, the explanation will focus on the B car. The B car requests the A car from the information about the road links L32 and L21 that are the destination roads, but the A car has the road links L32 and L21. No information is sent to Car B because there is no corresponding information. Thereafter, the acquisition information on the own vehicle is transmitted to each other, and the vehicle B stores the information on the road links L42 and L23 as the acquisition information from other vehicles.

At time T2 (T1 <T2) in FIG. 7, the vehicle B passes the node N2 and passes the oncoming vehicle C on the road link 21. Car C is traveling from node N1 to N3 via N2 and is passing oncoming car B on road link L1. Car C requests Car B for information on road links L12 and L23, which are roads ahead of the host vehicle. Since the vehicle B stores the information of the road link L23 received from the vehicle A when it passes the vehicle A first, this information is transmitted to the vehicle C. Car C stores information received from Car B as acquired information from other vehicles and uses it for various controls. Thereafter, the B car and the C car mutually transmit and receive the acquisition information in the own vehicle and store it as the acquisition information from the other vehicle.

According to this embodiment, the information of the traveling destination road vehicle can be obtained from an oncoming vehicle. For this reason, roadside equipment is unnecessary and there is an oncoming vehicle as compared to a system configured to acquire road-related information of the destination by acquiring information on the preceding vehicle via the roadside display device. There is a convenience that it is possible to acquire information on the road of the destination.

  In this embodiment, when a road for which road information is to be obtained from another vehicle is designated, road information about the designated road is transmitted from the road information stored in the storage means, and then Since the road information acquired by the vehicle is transmitted, the road information acquired by the own vehicle and the road information acquired from the other vehicle are transmitted to the oncoming vehicle, and the information that the vehicle that received the information wants from the own vehicle (the destination road Unlike information that is searched for (information), the same information does not travel between oncoming vehicles.

  That is, in the configuration in which the road information acquired from the host vehicle and the road information acquired from the other vehicle are both transmitted to the oncoming vehicle, the information received from the partner vehicle during communication is also stored in the information storage unit 9 as information received from the other vehicle. Therefore, the vehicle that has received the information transmits the information to the partner vehicle as road information acquired from the partner vehicle of the transmission source. The transmission source vehicle retransmits the reception information (information originally transmitted from the own vehicle) to the other vehicle as road information acquired from the other vehicle. However, in this embodiment, such a problem occurs. Absent.

  Also, in this embodiment, if the map data is different for the acquired road-related information, particularly road characteristics such as curve curvature, road surface μ, and road gradient, this is corrected to the acquired information. The data can be close to.

The present invention is not limited to the embodiment described above and shown in the drawings, and can be modified or expanded as follows.
The GPS receiver also functions as time acquisition means, but a separate clock may be provided as the time acquisition means.
Whether or not the vehicle is an oncoming vehicle is not limited to that based on the link ID of the road, and the oncoming vehicle is detected when the traveling direction is opposite to the traveling direction of the host vehicle by transmitting and receiving the detection direction of the traveling direction detection unit 6 between the vehicles. You may comprise so that it may judge.
The method of using the road information of the destination is not limited to the orientation of the headlamps, but can be used for switching control between 2WD and 4WD and engine output control using the road μ, and engine output control using road gradient information. It can be used for shift control. In addition, an optimum route search or an automatic re-search can be performed using the passing speed information of the destination road.
In FIG. 3, steps S3 to 5, steps S7 and 8, and steps S9 and S10 and 10 may be reversed in order.

Functional block diagram centering on a car navigation device showing an embodiment of the present invention Conceptual diagram showing the storage mode of road information acquired by the host vehicle Flow chart showing information transmission / reception control contents Conceptual diagram showing the contents of request data when requesting road information The figure which shows an example of the reply data of the road information about the requested road Figure 1 showing an example of sending and receiving road information with oncoming vehicles Figure 2 showing an example of sending and receiving road information with oncoming vehicles Communication sequence in the case of FIG.

Explanation of symbols

In the drawings, 1 is a car navigation device, 2 is a control unit (road designation means, communication control means, destination road selection means), 5 is a position detection unit (position acquisition means), 6 is a traveling direction detection unit, and 7 is a road. Gradient detection unit (road-related information acquisition unit), 8 is a map data storage unit (map data storage unit), 9 is an information storage unit (storage unit), 10 is a transmission data generation unit, 11 is a reception data processing unit, and 12 is Inter-vehicle communication unit (communication means), 13 a road form update judgment part (road form judgment means), 14 a forward road shape generation part, 18 a vehicle speed detection part (road related information acquisition means), 19 a road surface μ detection part (Road related information acquisition means) 21 is a steering angle detector (road related information acquisition means).

Claims (4)

A vehicle performs data communication with a road-related information acquisition unit that acquires road-related information about a traveling road while the host vehicle is traveling, a position acquisition unit that acquires an information acquisition position by the road-related information acquisition unit, and other vehicles. Communication means, the road related information and the information acquisition position acquired by the road related information acquisition means and the position acquisition means of the host vehicle, and the road related information and the information acquisition position acquired from another vehicle by data communication. A storage means for storing in a distinguishable manner,
Transmitting and receiving the road-related information and the information acquisition position between the oncoming vehicles traveling in opposite directions on one road via the communication means,
The other vehicle that has received the road-related information and the information acquisition position from one of the oncoming vehicles communicates with the other vehicle that travels behind the one vehicle via the communication means. , when the said another vehicle received the designation of the travel destination road you want to get the road-related information, the running target road that is the designated from among the stored the road-related information and the information acquisition position in the storage means after the sending the road-related information and the information acquisition position, the transmitting the road-related information and the information acquisition position acquired in the vehicle to the another vehicle, acquires the road-related information from the another vehicle When not receiving designation of a destination road to be transmitted, only the road related information acquired by the own vehicle and the information acquisition position are transmitted to the other vehicle,
The another vehicle acquires the road-related information of the destination road of the host vehicle from the road-related information and the information acquisition position transmitted from the other vehicle for the designated destination road. Destination road related information acquisition method. Road-related information acquisition means that is mounted on a vehicle and acquires road-related information related to the traveling road while the host vehicle is traveling;
Position acquisition means mounted on the vehicle for acquiring an information acquisition position by the road related information acquisition means;
A communication means mounted on the vehicle and performing data communication with another vehicle;
The road-related information and the information acquisition position acquired by data communication from the road-related information and the information acquisition position, which are mounted on the vehicle and acquired by the road-related information acquisition means and the position acquisition means of the host vehicle. Storage means for memorably distinguishing and
Road designation means that is mounted on the vehicle and designates a destination road from which the road related information is to be obtained;
Information for designating the destination road designated by the road designation means for an oncoming vehicle that is mounted on the vehicle and runs in the opposite direction on the traveling road of the host vehicle, and the road-related information stored in the storage means and the information A communication control unit that transmits an information acquisition position from the communication unit, and stores the road-related information and the information acquisition position transmitted from the oncoming vehicle and received by the communication unit in the storage unit;
Destination road related information selection means for selecting road related information of the destination of the host vehicle from the road related information stored in the vehicle and stored in the storage means,
Said communication control unit, from the time from the oncoming vehicle had specified travel destination road you want to get the road-related information, the oncoming vehicle from among the road-related information and the information acquisition position stored in said storage means After transmitting the road-related information and the information acquisition position of the designated destination road, the road-related information and the information acquisition position acquired by the own vehicle are transmitted, and the road-related information is transmitted from the oncoming vehicle. The destination road related information acquisition device is configured to transmit only the road related information acquired by the host vehicle and the information acquisition position to the oncoming vehicle when the specification of the destination road for which acquisition is desired is not received. In the traveling road related information acquisition device according to claim 2,
In the vehicle, map data storage means for navigation,
Road form determination means for acquiring a road form from the road related information and the information acquisition position stored in the storage means is mounted,
The road related information includes curvature and gradient information, and the road form determining means stores the road related information stored in the storage means and the road form acquired from the information acquisition position and the map data storage means. When the road form is different, the road form data in the map data storage means is changed to the acquired road form. The communication control means transmits the road-related information and the information acquisition position acquired by the own vehicle in order from the latest one, and the road-related information and the information acquisition position acquired from another vehicle are the opposite. 4. The travel destination road related information acquisition apparatus according to claim 2, wherein only the road that is designated as the travel destination road for which the road related information is desired to be acquired from a vehicle is transmitted.

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