Patent ID: 9638532
Date: 2017-05-02
CPC Classifications: B60W,B62D,G01C,G08G

Claim:
1. A vehicle drive assist system executed on a controller, the system comprising: a position detection device that detects a position of a vehicle based on a detection signal from at least one of a plurality of vehicular sensors; a map data acquisition device that acquires map data; a map matching device that determines the position of the vehicle on a road by map matching processing based on a detected position detected by the position detection device and the map data; an assist device that assists a driver's operation based on a determined position of the vehicle determined by the map matching device and a road shape ahead of the vehicle in a traveling direction indicated on the map data; a determination device that determines a probability that the vehicle travels a wrong way on a road where the traveling direction is fixed to one way; and a cancel device that cancels drive assist executed by the assist device when the determination device determines that a probability of reverse run exists, wherein: the map matching device has a reliability calculation device that estimates reliability of the determined position of the vehicle determined by the map matching device; the assist device performs the drive assist when the reliability is equal to or greater than a threshold value; and the cancel device forcibly reduces a numerical value of the reliability to be less than the threshold value when the determination device determines that the probability of reverse run exists.