FIELD: transport machinery. SUBSTANCE: rotary support of the two-axle trailer comprises a traction lever, a turntable connected to the body frame by means of a pivot mounted vertically to the turntable. The hinge anchorage of the traction lever with the tractor is made in the form of a cruciform hinge, equipped with a cross, formed from two axles fixedly connected to each other. The turntable consists of two round plates - upper and lower, in contact with each other by flat surfaces and connected by means of a pivot. The centre of the ball joint of the power cylinder rod to the pendulum lever is located in the vertical longitudinal plane. The rod and piston chambers of the power cylinder are connected by hydraulic lines to a three-position spool valve mounted on the tractor. EFFECT: reduction of lateral horizontal deviations of a two-axle trailer during rectilinear movement and the absence of obstacles when making turns of a combination vehicle during manoeuvring is achieved due to the possibility of suppressing transverse vibrations of a two-axle trailer. 1 cl, 4 dwg.