The vehicular speed detection and warning system is a traffic safety device. The vehicular speed detection and warning system is configured for use with a vehicle. The vehicular speed detection and warning system is configured for use on a road network. The vehicular speed detection and warning system is configured for use with a road network. The road network further comprises one or more streets, traffic signs, and traffic signals. The control module monitors and logs the compliance of the vehicles with the traffic control information presented by the traffic signs and the traffic signals by capturing images of the traffic signs and the traffic signals and comparing the traffic control instructions provided by the traffic signs and traffic signals with the operating performance of the vehicle.