Abstract: A system for detecting a collision in an intersection includes a plurality of vehicle detection sensors, a base station and a warning signal apparatus. The plurality of vehicle detection sensors are positioned preceding the intersection for detecting and transmitting velocity and position data of at least two vehicles. The base station is for receiving the velocity and position data of the vehicles so as to process the velocity and position data of the vehicles to determine the probability of the vehicles colliding. The base station transmits a warning signal when the probability exceeds a threshold. The warning signal apparatus is positioned preceding the intersection. The warning signal receives the warning signal from the base station to alert a driver of one of the vehicles of an imminent collision.