Safety device for automobile tractor-trailer combination uses existing lamps fitted to trailer vehicle for providing visual warning signal upon accidental uncoupling from tractor vehicle

摘要

The safety device uses a flashing warning lamp circuit fitted to the trailer vehicle (1) of the tractor-trailer combination and activated upon uncoupling of the trailer vehicle, e.g. via a detector incorporated in the electrical coupling (11,12) between the tractor and trailer vehicles. The flashing warning lamp circuit employs the trafficator lamps (3,7), the position lamps (10) and/or the rear lamps (4,8) for the trailer vehicle.