Driving support device that controls notification of the color of a traffic light based on the size of an intersection
In the driving support device, when the light color of the traffic light at the intersection in front of the own vehicle is yellow, the output unit outputs information of a call attention for the driver of the own vehicle. The distance acquisition unit acquires a travelable distance of the own vehicle within a predetermined reference time. Even if the light color of the traffic light is yellow, the output unit does not output the information of the call attention when the own vehicle is located in the range of the travelable distance on the entrance side from the reference position on the exit side of the intersection.
1 . A driving support device comprising:
a computing device including a processor and a memory storing program instructions that, when executed by the processor, cause the processor to perform operations including:
outputting information of a call attention for a driver of a vehicle when a light color of a traffic light at an intersection in front of the vehicle is yellow; and
acquiring a distance to be traveled by the vehicle within a predetermined reference time, wherein:
the processor does not output the information of the call attention when the vehicle is positioned within a road section that encompasses the distance to be traveled by the vehicle within the predetermined reference time from a reference position on an exit side of the intersection toward an entrance side of the intersection even when the light color of the traffic light is yellow.
2 . The driving support device according to claim 1 , wherein the predetermined reference time is determined to be at least a duration of time when the traffic light is yellow.
3 . The driving support device according to claim 1 , wherein the processor acquires the distance to be traveled by the vehicle within the predetermined reference time at a speed of the vehicle when a yellow light color of the traffic light is detected.
4 . The driving support device according to claim 1 , wherein:
the processor further acquires a distance necessary for stopping of the vehicle based on a speed of the vehicle;
the processor sets as a first position a position that is the farthest position from the intersection of a position of the vehicle at a distance necessary for stopping from a stopping reference position on the entrance side of the intersection or a position of the vehicle at the distance to be traveled by the vehicle within the predetermined reference time from the reference position on the exit side toward the entrance side of the intersection; and
the processor
outputs the information of the call attention when the light color of the traffic light is yellow and the vehicle has not reached the first position, and
does not output the information of the call attention when the vehicle is positioned closer to a side of the intersection than the first position even when the light color of the traffic light is yellow.
5 . The driving support device according to claim 1 , wherein:
the processor further acquires a maximum distance and a minimum distance necessary for stopping of the vehicle based on a speed of the vehicle;
the processor sets as a first position a position that is the farthest position from the intersection of a position of the vehicle at a minimum distance from a stopping reference position on the entrance side of the intersection or a position of the vehicle at the distance to be traveled by the vehicle during the predetermined reference time from the reference position on the exit side toward the entrance side of the intersection;
the processor sets as a second position a position of the vehicle at a maximum distance from the stopping reference position on the entrance side of the intersection; and
the processor
outputs the information of the call attention when the light color of the traffic light is yellow and the vehicle is positioned between the first position and the second position, and
does not output the information of the call attention when the vehicle is not positioned between the first position and the second position even when the light color of the traffic light is yellow.
6 . The driving support device according to claim 1 , wherein the light color of the traffic light at the intersection is detected by a camera in the own vehicle.