Patent ID: 7917269

Claim:
A vehicle control system, comprising: a memory device that stores level change information including location and magnitude of level changes on a road; a vehicle speed detecting device that detects the speed of a vehicle; a current location determination device that determines the current location of the vehicle; and a navigation device configured to determine if the vehicle is approaching a level change, based on the current location of the vehicle determined by the current location determination device and the location of level changes stored in the memory device, and to calculate, when a determination is made that the vehicle is approaching a level change an estimated vertical acceleration based on the speed of the vehicle detected by the vehicle speed detecting device and the magnitude of the level change stored in the memory device; and a vehicle speed changing device that executes deceleration control when the calculated estimated vertical acceleration is larger than a vertical acceleration predetermined for driver comfort at the speed of the vehicle detected by the vehicle speed detecting device.