Driving support device and driving support method
A driving support device includes: an intersection information acquiring unit 3 to obtain signal light information about traffic signals installed at one or more intersections ahead of a road along which the vehicle is traveling and to obtain distances to the intersections; a vehicle state detector 4 to detect a position and speed of travel of the vehicle; a signal passableness deciding unit 5 to decide a passable or impassable state of the traffic signals by the vehicle from the signal light information, the distances to the intersections, and the position and speed of travel of the vehicle; and a display controller 7 to display the passable or impassable state of the traffic signals decided by the signal passableness deciding unit 5 by changes of color on the map.
1. A driving support device for assisting a driver to drive a vehicle, the driving support device comprising:
an intersection information acquirer to obtain signal light information about traffic signals installed at one or more intersections ahead of the vehicle on a road along which the vehicle is traveling and to obtain distances to the intersections;
a vehicle state detector to detect a position and speed of travel of the vehicle;
a signal passableness decider to decide a passable or impassable state of the traffic signals by the vehicle from the signal light information and the distances to the intersections the intersection information acquirer obtains, and from the position and speed of travel of the vehicle the vehicle state detector detects; and
a display controller to display, on a display, a map including:
the position of the vehicle; and
the passable or impassable state of the traffic signals decided by the signal passableness decider, the passable or impassable state of the traffic signals being indicated by changes of color on the map,
wherein the passable state of the traffic signals are indicated by a first color on the map,
wherein the impassable state of the traffic signals are indicated by a second color, different from the first color, on the map, and
wherein the display controller displays a road passing through the intersection whose traffic signal is decided as passable from the vehicle position by the signal passableness decider in the first color, and displays a road passing through the intersection whose traffic signal is decided as impassable in the second color.
2. The driving support device according to claim 1 , further comprising:
a recommended speed processor to calculate a recommended speed, at which the vehicle is able to pass through a traffic signal, from the signal light information, the distance to the intersection at which the traffic signal is installed, and the position of the vehicle, wherein
the display controller displays a road passing through the intersection whose traffic signal is passable by changes of color on the map, when the vehicle travels at the recommended speed.
3. The driving support device according to claim 2 , wherein
the display controller displays the recommended speed on a speedometer image.
4. The driving support device according to claim 2 , wherein
the display controller displays the recommended speed on a screen of the display.
5. The driving support device according to claim 1 , further comprising:
a right or left turn detector to detect whether the vehicle turns at an intersection or not, wherein
the display controller terminates the display of the passable or impassable state of the traffic signals when the right or left turn detector detects that the vehicle has turned at the intersection.
6. The driving support device according to claim 1 , further comprising:
a congestion detector to detect congestion ahead of the vehicle on the road along which the vehicle is traveling, wherein
the display controller terminates the display of the passable or impassable state of the traffic signal when the congestion detector detects the congestion.
7. The driving support device according to claim 1 , wherein
the display controller displays the passable or impassable state of a traffic signal installed on a guide route up to a destination by changes of color on the map.
8. The driving support device according to claim 7 , further comprising:
a route deviation detector to detect that the vehicle deviates from the guide route, wherein
the display controller terminates the display of the passable or impassable state of the traffic signal when the route deviation detector detects that the vehicle deviates from the guide route.
9. A driving support method for assisting a driver to drive, comprising:
obtaining, by an intersection information acquirer, signal light information about traffic signals installed at one or more intersections ahead of the vehicle on a road along which the vehicle is traveling and obtaining distances to the intersections;
detecting, by a vehicle state detector, a position and speed of travel of the vehicle;
deciding, by a signal passableness decider, a passable or impassable state of the traffic signals by the vehicle from the signal light information and the distances to the intersections the intersection information acquirer obtains, and from the position and speed of travel of the vehicle the vehicle state detector detects; and
displaying, on a display, by a display controller, a map including:
the position of the vehicle; and
the passable or impassable state of the traffic signals decided by the signal passableness decider, the passable or impassable state of the traffic signals being indicated by changes of color on the map,
wherein the passable state of the traffic signals are indicated by a first color on the map,
wherein the impassable state of the traffic signals are indicated by a second color, different from the first color, on the map, and
wherein the displaying comprises displaying a road passing through the intersection whose traffic signal is decided as passable from the vehicle position by the signal passableness decider in the first color, and displaying a road passing through the intersection whose traffic signal is decided as impassable in the second color.
10. A driving support device for assisting a driver to drive a vehicle, the driving support device comprising:
an intersection information acquirer to obtain signal light information about traffic signals installed at two or more intersections ahead of the vehicle on a road along which the vehicle is traveling and to obtain distances to the intersections;
a vehicle state detector to detect a position and speed of travel of the vehicle;
a signal passableness decider to decide a passable or impassable state of the each of traffic signals installed at the two or more intersections by the vehicle from the signal light information and the distances to the intersections the intersection information acquirer obtains, and from the position and speed of travel of the vehicle the vehicle state detector detects; and
a display controller to display a map including the position of the vehicle on a display, and to simultaneously and separately display the passable or impassable state of all of the traffic signals installed at the two or more intersections decided by the signal passableness decider by changes of color on the map,
wherein the passable state of each of the traffic signals is indicated by a first color on the map, and
wherein the impassable state of each of the traffic signals is indicated by a second color, different from the first color, on the map.
11. The driving support device according to claim 10 , wherein
the display controller displays a road passing through the intersection whose traffic signal is decided as passable from the vehicle position by the signal passableness decider in the first color, and displays a road passing through the intersection whose traffic signal is decided as impassable in the second color.