Pneumatic braking system for a tractor-trailer vehicle with parking valve located on the trailer

摘要

The pneumatic braking system (1) has a parking valve (4) that is assigned to a trailer. A detecting device (93) is provided for the operating condition of a spring operated brake (8) of the trailer or the parking valve. The trailer has a data communication device, by which the operating condition of the spring operated brake is transferred to a drawing vehicle. The operating condition of the spring operated brake is detected by the detecting device. A Global positioning system is provided for indicating the movement of a vehicle.