A traction control system (TCS) is a vehicle system that helps keep a car under a control on the road. The system works by ensuring that the wheels do not spin too quickly when the road is wet or icy.
The same sensors that give a car anti-lock brake capability also enable the traction control system. Under normal driving conditions, a car's wheels spin at the same speed. When sensors detect that one wheel is rotating more quickly than the others, the brakes are automatically applied in brief intervals to the wheel that is spinning too rapidly. Drivers must be aware of how the traction control system works in conjunction with other vehicle safety features, such as anti-lock brakes and snow tires.