Driving assist apparatus and method for vehicle

A driving assist apparatus and method for a vehicle capable of guiding the vehicle at appropriate vehicle speed in accordance with the path is provided. The alarm vehicle speed (Valarm) for informing a driver of overspeed during driving assist is set lower for a changing steer region than for a fixed steer region. The lower alarm vehicle speed is set before the changing steer region is entered. Therefore, in the changing steer region, the vehicle speed can be sufficiently reduced, so that a set amount of steering can be accomplished. In the fixed steer region, the vehicle speed can be increased so as to reduce the time of travel.