Tractor-trailer, has roof spoiler assigned to driving cab, extending to rear up to structure of semitrailer, and movable depending on relative pivoting between semi-trailer and articulated towing vehicle

摘要

The tractor-trailer has an articulated towing vehicle (12) comprising a driving cab (10), and a semi-trailer (14) whose structure (16) is arranged at a distance behind the driving cab. A roof spoiler (22) is assigned to the driving cab, and extends to rear up to the semi-trailer. The roof spoiler is movable depending on relative pivoting between the semi-trailer and the articulated towing vehicle. The roof spoiler is mounted at a bearing (L) at the driving cab around drag axis running along vehicle vertical and transverse directions.