Lorries, in particular towing vehicles with air-guiding devices

Technical task Reduction of the drag coefficient with economically optimized measures in a vehicle pallet of different dimensions with simultaneous design evaluation of the entire vehicle. Solution of the technical task In trucks, especially semi-trailers, with cabs of different external dimensions and trailers of different height is a uniform, closed appearance with the same flow conditions by means of a wind deflector in the transition between cabs of different dimensions and subsequent trailers (2) different heights using a kit windschlüpfrig and design complementary Transition elements achieved, consisting of a predominantly on the rear part of the cab roof (3) arranged, height adjustable, in its dimensions for all cab variants uniform Windleitflügel (5), laterally on the cab rear wall (4), adjustable (17), fixed, uniform Windleitblechen (6a .6b) and arranged between Windleitflügel (5) and cab roof (3) and between Windleitflügel (5) and Windleitblechen (6a, 6b), these connecting unitary intermediate elements (7a, 7b, 8a, 8b). Trucks, in particular articulated vehicles