Semi-truck system

Truck system comprising at least one belt (10) to which a tensile load is applied, comprising a matrix (20) and one in the matrix (20) embedded load-bearing fiber structure (22) having a plurality of fibers (24) and which so to at least one deflection means (12) is guided around in that it comprises a curved portion (16) in the region of the deflection device (12), characterized, in that the fiber structure (22) comprises one or more carbon fibers (24) and the dimensioning of the belt (10) and the applied tensile load are adapted to each other such that in the curved portion (16) of the belt (10) is a voltage zero line (28) of the belt (10) relative to a center line of the load-bearing fiber structure (22) by a amount of at least 25% of the thickness (d) of the load-bearing fiber structure (22) is moved to bend radially inward direction, said fiber structure (22) has a thickness (d) that is less than or equal to (the 0.008-fold of a radius of curvature of the belt 10) is in the curved portion (16).