Travel control device and travel control method
First Claim
1. A travel control device comprising:
- a control device configured to;
acquire subject vehicle information including a position of a subject vehicle;
acquire lane marker information including positions of lane markers existing around the subject vehicle;
set a pair of control areas at right and left of the subject vehicle with reference to the lane markers, the control areas each having a predetermined width;
control a travel position of the subject vehicle so that the subject vehicle travels between the pair of control areas, the travel position of the subject vehicle being along a width direction of a travel lane in which the subject vehicle is traveling;
detect a change-point lane marker on a basis of the lane marker information, the change-point lane marker being a lane marker crossing a width direction line including a course change point at which the subject vehicle starts course change and extending by a predetermined distance, the course change point being located ahead of the subject vehicle in a travel direction; and
when the pair of control areas are set with reference to the change-point lane marker that comprises one of the pair at a course change side of the subject vehicle and the other one of the pair, then set a ratio (WR/WT) of a width (WR) of the other one of the pair to a width (WT) of the one of the pair to be larger than the ratio (WR/WT) of the widths of control areas set with reference to a lane marker other than the change-point lane marker, the lane marker other than the change-point lane marker existing within a region from the course change point to a point in front of the subject vehicle.
1 Assignment
0 Petitions
Accused Products
Abstract
A travel control device acquires subject vehicle information including the position of a subject vehicle, acquires lane marker information including positions of lane markers, sets control areas with reference to the lane markers, and controls a travel position of the subject vehicle so that the subject vehicle travels between a pair of control areas set at right and left of the subject vehicle. The lane markers include a change-point lane marker and includes a course change point. When the pair of control areas set with reference to the change-point lane marker comprises one of the pair at a course change side of the subject vehicle and the other of the pair, the ratio of a width of the other to a width of the one is set larger than the ratio of the widths of control areas set with reference to a lane marker other than the change-point lane marker.
12 Citations
16 Claims
-
1. A travel control device comprising:
a control device configured to; acquire subject vehicle information including a position of a subject vehicle; acquire lane marker information including positions of lane markers existing around the subject vehicle; set a pair of control areas at right and left of the subject vehicle with reference to the lane markers, the control areas each having a predetermined width; control a travel position of the subject vehicle so that the subject vehicle travels between the pair of control areas, the travel position of the subject vehicle being along a width direction of a travel lane in which the subject vehicle is traveling; detect a change-point lane marker on a basis of the lane marker information, the change-point lane marker being a lane marker crossing a width direction line including a course change point at which the subject vehicle starts course change and extending by a predetermined distance, the course change point being located ahead of the subject vehicle in a travel direction; and when the pair of control areas are set with reference to the change-point lane marker that comprises one of the pair at a course change side of the subject vehicle and the other one of the pair, then set a ratio (WR/WT) of a width (WR) of the other one of the pair to a width (WT) of the one of the pair to be larger than the ratio (WR/WT) of the widths of control areas set with reference to a lane marker other than the change-point lane marker, the lane marker other than the change-point lane marker existing within a region from the course change point to a point in front of the subject vehicle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
-
16. A travel control method for a vehicle executed by a computer, the computer controlling a subject vehicle so that the subject vehicle travels between lane markers at right and left of the subject vehicle, the travel control method comprising:
-
acquiring subject vehicle information including a position of the subject vehicle; acquiring lane marker information including positions of lane markers existing around the subject vehicle; setting control areas with reference to the lane markers, the control areas each having a predetermined width; and controlling a travel position of the subject vehicle so that the subject vehicle travels between a pair of control areas set at right and left of the subject vehicle, the travel position of the subject vehicle being along a width direction of a travel lane in which the subject vehicle is traveling, the setting control areas with reference to the lane markers including, when the pair of control areas are set with reference to a change-point lane marker that comprises one of the pair at a course change side of the subject vehicle and the other one of the pair, then setting a ratio (WR/WT) of a width (WR) of the other of the pair to a width (WT) of the one of the pair to be larger than the ratio (WR/WT) of the widths of control areas set with reference to a lane marker other than the change-point lane marker, the change-point lane marker being a lane marker course change and extending by a predetermined distance, the course change point being located ahead of the subject vehicle in a travel direction, the lane marker other than the change-point lane marker existing within a region from the course change point to a point in front of the subject vehicle.
-
Specification