Abstract: A vehicular warning system for use by school buses and/or other emergency vehicles in rural, hilly, areas and extremely low population areas, which provides a short range radio transmission signal broadcast sequentially over all 40 channels of a citizens band radio acting as an audible signal to be picked up by any nearby CB radio turned on. The warning system comprises a transmitter means to be installed on school buses and/or other emergency vehicles that can warn truck drivers of an upcoming situation which would require the truck to slow down or stop. The present system finds special utility in hilly regions where a truck driver cannot see over the next hill, and consequently does not know if he needs to stop.