Patent ID: 7792624

Claim:
A cruise control system comprising: a curve state detecting section configured to detect a curve state of a curve existing in front of a vehicle based on information obtained by a navigation system; a target deceleration rate calculating section configured to calculate a target deceleration rate at which the vehicle is decelerated within a deceleration control region before the curve based on the curve state detected by the curve state detecting section; a deceleration control section configured to execute deceleration control of the vehicle within the deceleration control region based on the target deceleration rate calculated by the target deceleration rate calculating section; a map matching detecting section configured to detect whether a map matching operation executed by the navigation system caused a vehicle traveling position in a map to move onto a traveling road on which the vehicle is estimated to be traveling; a position evaluating section configured to determine whether the vehicle traveling position after the map matching operation is within the deceleration control region; and a revising section configured to extend an end position of the deceleration control region to a position inside the curve when the position evaluating section determines that the vehicle traveling position after the map matching operation is within the deceleration control region.