FIELD: automobile production. SUBSTANCE: devices for connecting towed links of tractors with trailers. Tow hitch single axle trailer with adjustable length of the traction lever contains a traction telescopic lever made of inner and outer links. The outer link is made in the form of a pipe integral with the trailer frame, and the inner link is made movable and is connected by the front part to the tractor through a hinged mount. The hinge anchorage of the lever with the tractor is made in the form of a cruciform hinge, equipped with a cross, formed from horizontal axis and a pivot fixedly connected to each other. The horizontal axis is connected to the traction lever by means of a yoke rigidly connected to the inner link of the lever, and the pivot is rotatably fixed relative to its axis in the upper and lower eyelets of the yoke-flange. On the upper eyelet of the yoke-flange there is a working fluid distributor connected to the hydraulic system of the tractor, and the spool of the working fluid distributor is kinematically connected to the pivot. The inner and outer links of the traction lever are interconnected by means of a double-acting power cylinder. EFFECT: reduction in the length of the transport train during rectilinear motion by reducing the length of the traction lever. 1 cl 3 dwg.