A vehicle safety system for preventing unintended acceleration of motor vehicles due to the driver's pedal misapplication of depressing an accelerator instead of brakes against the driver's intention of stopping the vehicle. The system exploits the excessive pressure applied on the accelerator during a driver's pedal misapplication to reduce the engine speed and to apply the vehicle's brakes. The system is active only when excessive pressure is applied on the accelerator, and does not affect normal driving.