Abstract: A vehicle collision prevention system for preventing a source vehicle from colliding with an obstruent object comprising detection circuitry adapted for detecting and providing an indication of an impending collision with an obstruent object, the detection circuitry further comprising transmission circuitry adapted to transmit a preselected reference signal with a known frequency; reception circuitry adapted to receive a modulated reference signal reflected from an obstruent object; compensation circuitry adapted to receive environmental inputs external to the source vehicle and provide a measure of source vehicle velocity; processor circuitry coupled to the transmission circuitry, reception circuitry, and compensation circuitry, the processor circuitry adapted to control and monitor the transmission and reception of a reference signal, calculate its propagation time to and from an obstruent object, and determine its reflected strength, determine the approximate propagation velocity of the reference signal an