A system adapted to provide a warning to a motorist that a nearby vehicle has been in an accident. Embodiments include a crash detector operable to detect a crash of a vehicle, a transmitter to transmit a warning signal (typically, radio frequency) from the crashed vehicle, a receiver to receive a transmitted crash warning signal, and a display to warn the operator of an approaching vehicle of the crash. Some embodiments incorporate feedback from a vehicle's air-bag deployment circuitry to provide a trigger effective to broadcast the crash warning signal. Desirably, the operator of an approaching vehicle is provided with at least one, if not both, of a visual and an audible warning signal. Certain embodiments provide such audible and/or visual warning to approaching vehicles via the transmitted warning signal and a display and/or speaker carried in the approaching vehicle. Sometimes, audible and visual warnings may be transmitted directly from the crashed vehicle.