Abstract: In a vehicle speed control system, a vehicle speed command set corresponding to the position of a vehicle speed setting lever is fed into a dead area setting circuit in which the value of the vehicle speed command is changed to be not smaller than a preset minimum speed of the vehicle when it falls out of the dead area. Then the command is supplied into different delay compensating circuit depending on whether it is an acceleration command or a deceleration command. Further, the command outputted from the delay compensating circuit is subtracted by a brake signal generated by the operation of a brake pedal. The command thus subtracted causes a mechanical brake signal to generate when the speed of the vehicle is zero or minus.