Abstract: A motor vehicle warning system for use on a roadway having an established safe speed comprises a sensing and processing circuit located on the motor vehicle. Signaling elements are strategically placed on the roadway in advance of a hazardous area for the vehicle. The signaling elements, such as permanent magnets, are separated by a distance indicative of a recommended safe speed for executing the hazard. An induction coil located on the underside of the vehicle senses the magnetic field from the magnets as the vehicle passes and provides an input to the sensing and processing circuit. The time period for the vehicle to traverse the distance between the elements is compared in a logic circuit to the recommended time period representative of a safe speed. If the vehicle speed exceeds the safe speed, a warning signal is generated to give the driver additional time to react to the potentially dangerous situation that is about to be encountered.