JP2014115866A - Driving support device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform appropriate driving support, while preventing unnecessary driving support.SOLUTION: Collision possibility determination means 30A determines whether there is collision possibility that an own vehicle collides with an object. When a collision possibility condition to be determined by the collision possibility determination means 30A that the own vehicle and the object have possibility of colliding with each other is established, driving support control means 30B executes driving support that calls a driver of the own vehicle to pay attention. When a driving support finishing condition necessary for finishing the driving support is established, finishing determination means 30C finishes the driving support by the driving support control means 30B. Setting means 30D sets a time-out time that determines a period of executing the driving support. Even when the driving support finishing condition is not established, finishing means 30E finishes the driving support by the driving support control means 30B when the time-out time elapses from a start point of time of the driving support.

Description

  The present invention relates to a driving support device that provides driving support to a driver of a host vehicle in accordance with the possibility of collision with an object such as another vehicle.

Conventionally, as a driving assistance device, if it is determined that there is a possibility of collision between the host vehicle and another vehicle, driving assistance is performed to alert the driver to the driving distance of the host vehicle or the current position of the host vehicle. Based on this, it is known that when it is determined that the vehicle has been separated by a certain distance from a point where driving assistance is required, driving assistance is terminated.
In this case, the travel distance is detected by a travel amount sensor, and the current position is detected by a positioning device that performs positioning based on a positioning signal from a positioning satellite.
In addition, it does not provide driving assistance when there is a possibility of collision, but assists the driver's steering wheel operation or warns the driver to prevent the running vehicle from deviating from the driving range. There is known a driving support device that performs the above.
As such a driving support device, when notifying that the driving support has been canceled by a display device or an alarm device, the notification operation is changed according to the driver's consciousness state, and the driver's consciousness state is reduced. It has also been proposed to make it easier to notice that the driving assistance has been canceled (see Patent Document 1).

JP 2010-100088 A

However, in the former driving support device, the travel distance of the host vehicle cannot be obtained accurately due to the malfunction of the travel sensor, or the positioning signal from the positioning satellite cannot be received normally due to the shadow of the building, etc. Driving assistance does not end indefinitely, and unnecessary driving assistance is continued, which is troublesome for the driver.
Further, the latter driving support device is merely for making the driver aware of the cancellation of the driving support, and the above-mentioned problems are not particularly taken into consideration.
The present invention has been made in view of such circumstances, and an object of the present invention is to provide a driving support device that is advantageous in providing accurate driving support while preventing unnecessary driving support.

  In order to achieve the above-described object, the present invention provides a driving operation that urges the driver of the host vehicle when a collision possibility condition determined that the host vehicle and the target object collide with each other is satisfied. A driving support device that terminates the driving support when a driving support end condition necessary for executing the driving support and ending the driving support is satisfied, and sets a time-out time that determines a period for executing the driving support Means for ending the driving support when the time-out period elapses from the starting point of the driving support even if the driving support end condition is not satisfied.

According to the first aspect of the present invention, by setting the timeout time for determining the period for executing the driving support, even if the driving support end condition is not established, the timeout time has elapsed from the start of the driving support. Then, since the driving assistance is ended, unnecessary driving assistance can be prevented, which is advantageous in providing accurate driving assistance without making the driver feel bothersome.
According to the second aspect of the present invention, the object is another vehicle, and the collision possibility is a collision possibility that the own vehicle collides with another vehicle when the own vehicle approaches or enters the intersection. This is advantageous in providing accurate driving support.
According to the third and fourth aspects of the present invention, when there is a large amount of traffic and there is a low possibility that the own vehicle will leave the point where driving assistance is to be provided early, the driving assistance period can be sufficiently secured. Can be prevented from being interrupted or unsupported. In addition, if the traffic volume is low and there is a high possibility that the vehicle will leave the point where driving assistance is to be provided at an early stage, the driving assistance period can be minimized, which makes the driver feel bothersome. This makes it more advantageous to provide accurate driving assistance.
According to the fifth aspect of the present invention, even if the driving support end condition is not satisfied, the driving support is ended according to the display state of the traffic light installed at the intersection. This makes it more advantageous to provide accurate driving assistance.
According to the sixth aspect of the present invention, the time-out time is adjusted in consideration of the presence or absence of an oncoming vehicle in addition to the display state of the traffic lights installed at the intersection, which is further advantageous in providing accurate driving support. .

It is a block diagram which shows the structure of the driving assistance apparatus 10 which concerns on embodiment. It is a flowchart explaining operation | movement of the driving assistance apparatus 10 in embodiment. (A)-(D) is explanatory drawing which shows the 1st operation example of the driving assistance apparatus 10. FIG. (A)-(D) is explanatory drawing which shows the 2nd operation example of the driving assistance apparatus 10. FIG.

Next, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram showing a configuration of a driving support apparatus 10 according to an embodiment of the present invention.
The driving support device 10 is mounted on the host vehicle, and includes a positioning unit 12, a travel distance detection unit 14, a vehicle information acquisition unit 16, a camera 18, a clock unit 20, a vehicle-to-vehicle communication unit 22, and a road. The inter-vehicle communication unit 24, the display device 26, the speaker 28, and the driving support ECU 30 are configured.

The positioning unit 12 receives positioning radio waves transmitted from a plurality of positioning satellites, detects position information indicating the position of the host vehicle, and supplies the position information to the driving support ECU 30. For example, the host vehicle The positioning part which comprises the navigation system mounted in can be used.
Since the positioning unit 12 can detect time information indicating the current time by receiving positioning radio waves transmitted from a plurality of positioning satellites, the positioning unit 12 may constitute clock means described later.

The travel distance detector 14 detects the travel distance of the host vehicle and supplies the travel distance to the driving support ECU 30.
The vehicle information acquisition unit 16 acquires vehicle information related to the host vehicle and supplies the vehicle information to the driving support ECU 30.
The vehicle information includes various information related to the host vehicle necessary for driving support, such as travel speed, traveling direction, and operation of a direction indicator.

The camera 18 captures an image of the periphery of the host vehicle, and an object located around the host vehicle, for example, a moving body such as another vehicle, a passerby, or a bicycle, or a non-moving structure such as a telegraph pole, guardrail, or pole. And the detection result is supplied to the driving support ECU 30.
In the present embodiment, a case will be described in which the camera 18 detects an oncoming vehicle (another vehicle) by imaging the front of the host vehicle. Therefore, in the present embodiment, the camera 18 functions as an oncoming vehicle detection unit that detects the presence or absence of an oncoming vehicle.
That is, in the present embodiment, the driving support device 10 describes a case where driving support is performed when an object located around the host vehicle is an oncoming vehicle, but the object is limited to an oncoming vehicle. Of course, the above-described moving body (including vehicles other than oncoming vehicles) and structures may be used.
Instead of the camera 18 or in addition to the camera 18, a radar may be provided to detect an object located in the vicinity of the host vehicle by the radar, and the detection result may be supplied to the driving support ECU 30.
When a radar that emits radio waves is provided in front of the host vehicle, the radar functions as an oncoming vehicle detection unit that detects the presence or absence of an oncoming vehicle.

  The clock unit 20 (clock unit) measures the current time and supplies time data to the driving support ECU 30.

The inter-vehicle communication unit 22 communicates with other vehicles located in the vicinity of the host vehicle via the inter-vehicle communication under the control of the driving support ECU 30, the position information of the own vehicle, the vehicle information of the own vehicle, and the position information of the other vehicle. The vehicle information of other vehicles is mutually transmitted and received.
When the oncoming vehicle has an inter-vehicle communication unit, the on-vehicle communication unit 22 of the host vehicle can detect the oncoming vehicle, so the inter-vehicle communication unit 22 of the own vehicle is used as the oncoming vehicle detection means. It can also be used.

The road-to-vehicle communication unit 24 is connected to an intersection from a central device provided in a traffic control center or the like via a transmission / reception unit (roadside machine) installed on the road infrastructure side through road-to-vehicle communication under the control of the driving support ECU 30. The position, the shape of the intersection, the number of lanes at the intersection, and the like are acquired.
The road-to-vehicle communication unit 24 functions as traffic information acquisition means for acquiring traffic information indicating the current traffic at the intersection.
The road-to-vehicle communication unit 24 functions as a traffic signal information acquisition unit that acquires traffic signal information indicating a display state of a traffic signal installed at an intersection.
In the present embodiment, a case will be described in which the traffic signal information is the remaining time until an arrow signal indicating that a right turn or a left turn is possible is turned on.

Instead of acquiring the position of the intersection, the shape of the intersection, the number of lanes of the intersection, and the like by the road-to-vehicle communication unit 24, the following may be performed.
A map database that stores location information on the earth and map data associated with this location information is provided, and intersection information such as the location of the intersection, the shape of the intersection, and the number of lanes at the intersection are stored as map data. Keep it.
Then, intersection information is acquired from the map database based on the position information detected by the positioning unit 12.

The display device 26 displays characters and images. In the present embodiment, the display device 26 displays an alarm for alerting the driver under the control of the driving support ECU 30.
The speaker 28 generates a warning sound and a voice announcement. In the present embodiment, the speaker 28 generates a sound for alerting the driver under the control of the driving support ECU 30.
The display device 26 and the speaker 28 may constitute a navigation system or an audio system mounted on the host vehicle.

The driving support ECU 30 receives information from the positioning unit 12, the travel distance detection unit 14, the vehicle information acquisition unit 16, the camera 18, the clock unit 20, the inter-vehicle communication unit 22, and the road-to-vehicle communication unit 24, and also includes a display device 26 and a speaker. 28 operations are controlled.
The driving support ECU 30 includes a CPU, a ROM that stores and stores a control program, a RAM as an operation area of the control program, an EEPROM that holds various data in a rewritable manner, an interface unit that interfaces with peripheral circuits, and the like. Composed.
As shown in FIG. 1, when the CPU executes the control program, the driving support ECU 30 causes the collision possibility determination means 30A, the driving support control means 30B, the end determination means 30C, the setting means 30D, and the end means. Functions as 30E.

The collision possibility determination means 30A determines whether or not there is a collision possibility that the host vehicle and the target object collide. In this embodiment, when the host vehicle approaches or enters the intersection, The presence or absence of a collision possibility between the vehicle and another vehicle is determined.
In the present embodiment, the collision possibility determination unit 30 </ b> A is acquired by the vehicle information of the host vehicle acquired by the vehicle information acquisition unit 16, the position information of the host vehicle acquired by the positioning unit 12, and the inter-vehicle communication unit 22. Judgment of possibility of collision based on vehicle information of other vehicles, position information of other vehicles, and intersection information (intersection position, shape of intersection, number of lanes of intersection, etc.) acquired by road-to-vehicle communication unit 24 To do.

The driving support control means 30B prompts the driver of the own vehicle to call attention when a collision possibility condition determined by the possibility of collision judgment means 30A that the own vehicle and the target object collide with each other is satisfied. Driving assistance is performed.
For example, driving assistance for urging attention to an oncoming vehicle when the host vehicle turns to the right is to cause the display device 26 to display a warning message “Please pay attention to the oncoming vehicle” or from the speaker 28 to “ Please be careful "warning announcement or by generating a predetermined warning sound.

The end determination means 30C ends the driving support by the driving support control means 30B when a driving support end condition necessary for ending the driving support is satisfied.
The driving support end condition is that the host vehicle is a fixed distance from a point where driving support is required based on the driving distance of the host vehicle detected by the driving distance detector 14 or the current position of the host vehicle detected by the positioning unit 12. It is established when it is determined that they are separated.
For example, if the point where driving assistance is required is an intersection, it is detected when the travel distance sufficient for the vehicle to leave the intersection is detected or when the host vehicle is located at a point separated from the intersection. In this case, the driving support end condition is satisfied.

The setting unit 30D sets a time-out period that determines a period during which driving assistance is executed.
In the present embodiment, the setting unit 30D increases the timeout time as the traffic volume indicated by the traffic volume information indicating the current traffic volume acquired by the road-to-vehicle communication unit 24 (traffic volume information acquisition unit) increases. And the timeout time is set to be shorter as the traffic volume indicated by the traffic volume information is smaller.
Further, the setting unit 30D sets the time-out time to be longer in a time zone with a high traffic volume based on the time information acquired from the clock unit 20, and sets the time-out time to be shorter in a time zone with a low traffic volume. To do.

Further, the setting means 30D sets the time-out time based on the traffic signal information which is the remaining time until the arrow signal indicating that the right or left turn acquired by the road-to-vehicle communication unit 24 (traffic information acquisition means) can be turned on. Adjust and set.
In this case, the setting means 30D adjusts the time-out time so that the driving support ends when the arrow signal is lit when the camera 18 (oncoming vehicle detection means) detects that there is no oncoming vehicle. To do.
If the camera 18 (oncoming vehicle detection means) detects that there is an oncoming vehicle, the setting means 30D finishes driving support when a predetermined margin time has elapsed after the arrow signal is lit. Adjust the timeout time to

  The ending means 30E terminates the driving support by the driving support control means 30B if the time-out time has elapsed from the starting time of driving support even if the driving support end condition is not satisfied.

Next, operation | movement of the driving assistance apparatus 10 is demonstrated with reference to the flowchart of FIG.
When the driving support device 10 starts operation, the driving support ECU 30 repeatedly executes the processing routine of the flowchart of FIG.
First, the driving assistance ECU 30 determines whether or not there is a possibility of collision between the own vehicle and another vehicle based on the information acquired by the inter-vehicle communication unit 22, the road-to-vehicle communication unit 24, and the vehicle information acquisition unit 16, and the possibility of collision. It is determined whether the condition is satisfied (step S10: collision possibility determination means 30A).
If the collision possibility condition is not satisfied, the process returns to step S10.
When the collision possibility condition is satisfied, the driving support ECU 30 acquires traffic information or traffic signal information by the road-to-vehicle communication unit 24, and acquires time information from the clock unit 20 (step S12).

Next, the driving support ECU 30 sets a timeout time based on the traffic information or the time information (step S14: setting means 30D).
Alternatively, the time-out time is set based on the traffic signal information that is the remaining time until the arrow signal indicating that a right turn or a left turn is possible is turned on (step S14: setting means 30D).
Next, the driving support ECU 30 starts driving support by causing the display device 26 to display a warning or generating a warning announcement or warning sound from the speaker 28 (step S16: driving support control means 30B).

The driving support ECU 30 determines whether or not the driving support end condition is satisfied based on whether or not the host vehicle is separated from the point where driving support is required (step S18: end determination means 30C).
If the driving support end condition is satisfied, the driving support ECU 30 ends the driving support. In this case, driving assistance is normally terminated.
That is, the warning display on the display device 26, or the warning announcement or warning sound from the speaker 28 is terminated (step S20: driving support control means 30B).

On the other hand, if the driving support end condition is not satisfied in step S18, the driving support ECU 30 determines whether or not a timeout time has elapsed (step S22: end means 30E).
If the time-out time has elapsed, the driving support is terminated (step S24: termination means 30E). In this case, driving support is forcibly terminated when the timeout time elapses.
If the timeout time has not elapsed, the process returns to step S18.
This is the end of the processing routine.

Note that the timeout time setting process in steps S12 and S14 of FIG. 2 may be as follows.
First, a predetermined default value is set as the timeout time.
Next, it is determined whether the timeout time needs to be adjusted based on traffic volume information, time information, traffic signal information, and the like.
If it is not necessary to adjust the timeout period, the default timeout period is maintained.
If it is necessary to adjust the timeout time, the timeout time is adjusted to increase or decrease from the default value based on the traffic information, time information, and traffic signal information, and the timeout time is reset.
For example, when the default value is 60 seconds and the timeout time is increased, 30 seconds is added to the default value 60 seconds to set the timeout time to 90 seconds. When reducing the timeout time, the timeout value is set to 30 seconds by subtracting 30 seconds from the fault value of 60 seconds.

Next, a first operation example of the driving support device 10 will be specifically described with reference to FIGS. 2 and 3.
FIGS. 3A to 3D are explanatory views showing the operation when the host vehicle 2 enters the intersection C1 where the road R1 and the road R2 intersect and makes a right turn.
As shown in FIG. 3A, when the host vehicle 2 traveling on the road R1 approaches the intersection C1, the driving support ECU 30 is acquired by the inter-vehicle communication unit 22, the road-to-vehicle communication unit 24, and the vehicle information acquisition unit 16. Based on the information, it is determined whether or not there is a possibility of collision between the host vehicle 2 and the other vehicle 4 (step S10).
When the collision possibility condition is satisfied, the driving assistance ECU 30 sets a timeout time based on the traffic information acquired by the road-to-vehicle communication unit 24 or the time information (steps S12 and S14).
Next, the driving support ECU 30 starts driving support and displays a warning on the display device 26 or generates a warning announcement or a warning sound from the speaker 28 (step S16: driving support control means 30B).

As shown in FIG. 3B, the driver makes the host vehicle 2 enter the intersection C1 and stops temporarily while recognizing driving assistance.
As shown in FIG. 3C, the driver turns the host vehicle 2 to the right after confirming that the oncoming vehicle 4 passes through the intersection C1.
The driving support ECU 30 determines whether or not a driving support end condition is satisfied based on whether or not the host vehicle 2 is separated from the point where driving support is required (step S18).
If the driving support end condition is satisfied, the driving support ECU 30 ends the driving support.
A symbol P0 in FIG. 3D indicates the position of the host vehicle 2 at the time when the driving support is ended due to the establishment of the driving support end condition.
On the other hand, when the positioning operation by the positioning unit 12 is not performed normally, or when the travel distance is not detected normally by the travel distance detection unit 14, the driving support end condition is not satisfied.
When the driving support end condition is not satisfied, the driving support ECU 30 ends the driving support when the time-out time has elapsed (steps S22 and S24).
Reference sign P1 in FIG. 3D indicates the position of the host vehicle 2 at the time when the driving support is ended due to the elapse of the timeout time after the driving support is not ended due to the failure of the driving support end condition.

Next, a second operation example of the driving support device 10 will be specifically described with reference to FIGS.
4A to 4D are explanatory diagrams illustrating an operation when the host vehicle 2 enters the intersection C2 where the road R10 and the road R12 intersect and makes a right turn.
As shown in FIG. 4A, a first traffic light 40 is installed at an intersection C2 corresponding to the road R10 on which the host vehicle 2 travels, and the road R12 intersects with the road R10 on which the host vehicle 2 travels. Correspondingly, a second traffic light 42 is installed.
The first traffic light 40 includes a right turn arrow signal 40A in addition to a green signal 40G, a yellow signal 40Y, and a red signal 40R.
The second traffic light 42 includes a green signal 42G, a yellow signal 42Y, and a red signal 42R.
In the figure, the lighting state of each of the green, yellow, and red signals is indicated by a white circle, and the extinguished state is indicated by a black circle.
The lighting state of the right turn arrow signal 40A is indicated by an arrow, and the extinguished state is indicated by a black circle.
Further, a transmission / reception unit 44 for road-to-vehicle communication is installed in the vicinity of the road R10 on which the host vehicle 2 travels.

As shown in FIG. 4A, when the host vehicle 2 traveling on the road R10 approaches the intersection C2, the driving support ECU 30 is acquired by the inter-vehicle communication unit 22, the road-to-vehicle communication unit 24, and the vehicle information acquisition unit 16. Based on the information, it is determined whether or not there is a possibility of collision between the host vehicle 2 and the oncoming vehicle 4 (step S10).
When the collision possibility condition is satisfied, the driving support ECU 30 acquires the traffic signal information by the road-to-vehicle communication unit 24, and based on the traffic signal information that is the remaining time until the arrow signal 40A indicating that a right turn is possible is turned on. A timeout time is set (steps S12 and S14).
In this case, as described above, when the camera 18 detects that the oncoming vehicle 4 is not present, the time-out time is adjusted so that the driving support ends at the same time as the arrow signal 40A is turned on. When it is detected that there is an alarm, the time-out time is adjusted so that the driving support is finished when a predetermined margin time has elapsed after the arrow signal 40A is turned on.
Next, the driving support ECU 30 starts driving support by causing the display device 26 to display a warning or by generating a warning announcement or a warning sound from the speaker 28 (step S16).

As shown in FIG. 4B, since the green signal 40G of the first traffic light 40 is lit, the driver recognizes the driving assistance and enters the own vehicle 2 into the intersection C2 temporarily. Stop.
As shown in FIG. 4C, after the red signal 40R of the first traffic light 40 is turned on, the right turn arrow signal 40A of the first traffic light 40 is turned on as shown in FIG. 4D.
Then, the driving support ECU 30 determines whether or not the driving support end condition is satisfied based on whether or not the host vehicle 2 is separated from the point where driving support is required (step S18). The host vehicle 2 is still located in the intersection C2.
Therefore, although the driving support end condition is not satisfied, the driving support ECU 30 ends the driving support when the time-out time has elapsed (steps S22 and S24).
That is, if there is no oncoming vehicle 4, the driving assistance is terminated simultaneously with the lighting of the right turn arrow signal 40 </ b> A of the first traffic light 40. On the other hand, if there is an oncoming vehicle 4, the driving support is terminated after a surplus time has elapsed from when the right turn arrow signal 40 </ b> A of the first traffic light 40 is turned on.
As shown in FIG. 4D, the driver turns the host vehicle 2 to the right within the intersection C2 and travels toward the road R12 while confirming that the right turn arrow signal 40A is turned on.

  As described above, according to the present embodiment, by setting the timeout time for determining the period for executing the driving assistance, even if the driving assistance end condition is not satisfied, the time-out is started from the starting time of the driving assistance. Since driving assistance is terminated when time has elapsed, unnecessary driving assistance can be prevented, which is advantageous in providing accurate driving assistance without causing the driver to feel bothered.

  In the present embodiment, the target object is another vehicle, and the collision possibility is a collision possibility that the own vehicle collides with another vehicle when the own vehicle approaches or enters the intersection. This is advantageous for providing accurate support.

In this embodiment, the timeout time is set to be shorter as the traffic volume indicated by the traffic volume information indicating the current traffic volume at the intersection is smaller. Set to be longer.
Further, in the present embodiment, based on the time information acquired by the clock means, the time-out time is set to be shorter in the time zone where the traffic volume is low, and the time-out time is set to be longer in the time zone where the traffic volume is high. I set it.
Therefore, when there is a low traffic volume and there is a high possibility that the host vehicle will leave the point where driving assistance is to be provided at an early stage, the driving assistance period can be minimized.
In addition, if there is a high traffic volume and the possibility that the vehicle will leave early from the point where it should support driving is low, it is possible to secure a sufficient driving support period. Can be prevented.
Therefore, it is more advantageous in providing accurate driving support without making the driver feel bothersome.

Further, in the present embodiment, the timeout time is adjusted and set based on the traffic signal information indicating the display state of the traffic signal installed at the intersection.
Therefore, even if the driving support end condition is not satisfied, the driving support is ended according to the display state of the traffic lights installed at the intersection, so that the driver does not feel bothered and the driving support is accurate. It becomes more advantageous when performing.

In the present embodiment, the traffic signal information is the remaining time until the arrow signal 40A indicating that a right turn or a left turn can be turned on. When it is detected that there is no oncoming vehicle, the arrow signal 40A is When the time-out time is adjusted so that the driving support is completed at the same time as the light is turned on, and it is detected that there is an oncoming vehicle, the driving support is performed when a predetermined margin time elapses after the arrow signal 40A is turned on. Adjusted timeout time to finish.
Therefore, in addition to the display state of the traffic lights installed at the intersection, the time-out time is adjusted in consideration of the presence or absence of an oncoming vehicle, which is more advantageous in providing accurate driving support.

In the present embodiment, when the host vehicle 2 enters an intersection that forms a crossroads and makes a right turn or a left turn, the target object for determining the possibility of collision with the host vehicle 2 is the oncoming vehicle 4 ( Although driving assistance in the case of other vehicles) has been described, the present invention is not limited to such a case, and can be applied to driving assistance at various types of conventionally known intersections.
For example, the present invention can of course be applied to driving assistance when the host vehicle 2 enters an intersection that forms a T-shaped road, turns left, and joins a main road.
In this case, the target object for determining the possibility of collision with the host vehicle 2 is another vehicle that travels on the main road and approaches from the right side of the host vehicle 2.
Therefore, the driving assistance in this case is to display a warning message “Please be careful about vehicles approaching from the right side” on the display device 26, or from the speaker 28 “Please be careful about vehicles approaching from the right side. ”Or a predetermined warning sound is generated.

  2 ... Own vehicle, 4 ... Oncoming vehicle (other vehicle), 10 ... Driving support device, 12 ... Positioning unit, 14 ... Travel distance detection unit, 16 ... Vehicle information acquisition unit, 18 ... Camera, 20 ... Clock unit, 22 ... Inter-vehicle communication unit, 24 ... Road-to-vehicle communication unit, 26 ... Display device, 28 ... Speaker, 30 ... Driving assistance ECU, 30A ... Collision possibility judging means, 30B …… Driving support control means, 30C …… End judging means, 30D …… Setting means, 30E …… End means, 40 …… First traffic light, 40A …… Arrow signal, 44 …… Transmission / reception unit for road-to-vehicle communication .

Claims (6)

In order to terminate the driving support by executing driving support for alerting the driver of the own vehicle when a collision possibility condition for determining that there is a collision possibility that the own vehicle and the target object collide is satisfied. A driving support device that ends the driving support when a driving support end condition necessary for the operation is satisfied,
Setting means for setting a timeout period for determining a period for executing the driving support;
Even if the driving support end condition is not satisfied, if the time-out period has elapsed since the start of the driving support, an ending unit that ends the driving support;
A driving support apparatus comprising: The object is another vehicle,
The collision possibility is a collision possibility that the own vehicle collides with the other vehicle when the own vehicle approaches or enters an intersection.
The driving support apparatus according to claim 1. A traffic information acquisition means for acquiring traffic information indicating the current traffic at the intersection,
The setting means sets the timeout time to be longer as the traffic volume indicated by the traffic volume information is larger, and sets the timeout time to be shorter as the traffic volume indicated by the traffic volume information is smaller. ,
The driving support apparatus according to claim 2, wherein: A clock means for acquiring time information;
The setting means, based on the acquired time information, to set the timeout time to be longer for a time zone with a large traffic volume, and to set the timeout time to be shorter for a time zone with a small traffic volume,
The driving support apparatus according to claim 2, wherein: Comprising traffic signal information acquisition means for acquiring traffic signal information indicating a display state of the traffic signal installed at the intersection;
The setting means adjusts and sets the timeout time based on the traffic signal information.
The driving support apparatus according to claim 2, wherein: The other vehicle is an oncoming vehicle, and includes an oncoming vehicle detection means for detecting the presence or absence of the oncoming vehicle,
The traffic signal information is a remaining time until an arrow signal indicating that a right turn or a left turn is possible,
The setting means adjusts the time-out time so that the driving support ends at the same time when the arrow signal is lit when the oncoming vehicle detection means detects that the oncoming vehicle is not present, and the oncoming vehicle detection means When it is detected that the oncoming vehicle is present, after the arrow signal is turned on, the time-out time is adjusted so that the driving support ends when a predetermined margin time elapses.
The driving support apparatus according to claim 5.

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