Towing vehicle for towing vehicle-trailer combination, has wind diffusing system including side flap and roof spoiler that are adjustable between retracted position and extended position in vehicle longitudinal direction

摘要

The vehicle has a wind diffusing system (10) including a side flap (12) and a roof spoiler (18). The flap and spoiler are adjustable between a retracted position and an extended position in a vehicle longitudinal direction. A distance is bridged between a driver`s cab (8) and a trailer (4) in the extended position that is assigned to a high speed compared to another speed. A part of the flap and spoiler is firmly arranged at the driver`s cab. A regulating unit is controlled by an electronic control device for speed dependent regulation of the diffusing system.