DRIVING ASSIST DEVICE FOR VEHICLE AND DRIVING ASSIST METHOD FOR VEHICLE

A driving assist device for a vehicle includes: a storage device that stores map information; and a processor that executes a process of following up a leading vehicle. In the process of following up the leading vehicle, the processor detects an exit of a traveling road, based on at least one of the map information and a recognition sensor equipped in the vehicle, the exit being positioned forward of the vehicle on the traveling road, and decides a vehicle stop position of the vehicle at the vicinity of the exit, based on a predicted vehicle stop position of the leading vehicle, when an intention to enter the exit is detected from a following vehicle behind the vehicle, the predicted vehicle stop position of the leading vehicle being estimated short of the exit.