| 摘要 |
<P>PROBLEM TO BE SOLVED: To properly estimate speed limit of a road on which an own vehicle travels. <P>SOLUTION: The traveling control device is configured to perform image processing on image information obtained by a front camera 4 and a rear camera 5 and detect the width of a lane, a line type of a lane marking on both sides of the lane, the width of a shoulder between a left sidewalk and a section outside a driveway, and the width of a center zone. The traveling control device predicts a "road group" of the road on which an own vehicle travels on the basis of the above information and road type information obtained from a navigation device 2 to estimate design speed determined in advance for the "road group" (step S1-S5), acquires road gradient and road curve radius information from the navigation device 2 to estimate the design speed determined in advance for the road gradient and the road curve radius of the road on which the own vehicle travels (step S6, S7), and estimates the design speed of the road on which the own vehicle travels from the design speed estimated on the basis of the "road group", the road gradient and the road curve radius to be determined as an estimated speed limit of the road on which the own vehicle travels (step S8). <P>COPYRIGHT: (C)2013,JPO&INPIT |
