To realize a vehicle behavior more matched with the feeling of a driver so that no sensation of fear is given to the driver whose vehicle is traveling on a branch road from a main road, e.g. a guide road from a superhighway main road to a service area.
Whether this vehicle is traveling on a branch road provided for branching traveling vehicles from the main road of a general superhighway or a city superhighway or not is judged (S191). If it is judged that the vehicle is traveling on the branch road (S191: YES), the upper limit target acceleration capable of decelerating the vehicle is calculated according to the type of the branch road (S194, S196, S198). When the target acceleration calculated via inter-vehicle control or constant speed travel control exceeds the upper limit target acceleration, vehicle speed control is applied with the upper limit target acceleration used as a target acceleration.
TERAMURA EIJI
NATSUME TSUTOMU
SATO YASUHIKO
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