By means of the sensors installed on car wheels, the system constantly measures and compares the speed of rotation of driving wheels and monitors its sharp increase.

If the wheel begins to revolve, the system applies brakes partially it, reducing torque to the level providing preservation of coupling of a wheel with the road.

The system also controls the frequency of rotation of a bent shaft of the engine, supporting her at the level providing coupling of wheels with the road irrespective of the provision of a pedal of an accelerator.

Fig. 1.88. Control lamp of system of course stability

At inclusion of system the control lamp begins to blink (see fig. 1.88).