TRC: Traction Control System - Makes driving in slippery conditions easier and safer. Sensors continuously monitor the rotational speed of each individual wheel. As soon as they detect that one or more wheels are starting to slip, the system instantaneously calculates the best way to restore traction. The engine's computer control unit then adjusts the throttle accordingly and the Brake Actuator directs the braking force to the most appropriate wheel (or wheels) until traction returns.