Vehicle position correction method and vehicle position correction device for drive-assisted vehicle

Abstract

A vehicle position correction device corrects a position error of an host vehicle provided with a navigation control unit that includes a target route corrector that corrects a target route. The target route corrector detects a lane boundary of a lane in which the host vehicle travels. The target route corrector compares positional relationships between a detect lane boundary and a target route on a map, and calculates a lateral correction amount for the target route in situations where the target route is within a prescribed distance of the lane boundary, or in situations where the target route is on an opposite side of the lane boundary to the host vehicle. Upon calculating the lateral correction amount, the target route corrector moves the target route sideways in a lateral direction by the lateral correction amount to correct the target route.