TRAVEL CONTROL METHOD AND TRAVEL CONTROL DEVICE FOR DRIVE-ASSISTED VEHICLE

A travel control device includes a controller for controlling travel of an autonomous host vehicle. The controller detects left and right lane boundaries and controls travel of the host vehicle based on a result of lane boundary detection. The controller includes a road geometry distinguishing unit and a rate limiter unit. The road geometry distinguishing unit distinguishes a curve, and a direction of the curve, based on road geometry information. When traveling through the curve, the rate limiter unit sets a result of lane boundary detection at an inside of a corner to a value for which change in a lateral direction approaching the host vehicle is restricted.