An improved motor vehicle speed and braking control system configured to maximize performance and response times for braking to a driver's instinctual physiological and psychological response to a perceived need to decelerate. The system provides a throttle pedal and brake pedal system configured to cause braking and an immediate change of engine power to idle once a user touches or causes activation of safety switches by a proximity or contact with them directly or with the brake pedal or a sliding of the throttle pedal depending on the configuration. Accidental acceleration during any attempt to brake is thereby eliminated by the system.