What does Automatic Traction Control (ATC) use to detect loss of traction?

Automatic Traction Control (ATC) primarily relies on pulsating signals from speed sensors to detect loss of traction. These sensors monitor the rotational speed of each wheel. When the system identifies that one or more wheels are spinning significantly faster than others, indicating a loss of grip on the surface, it activates to help regain traction.

This system enhances vehicle stability by selectively applying the brakes to the spinning wheels or adjusting engine power. By responding to the direct feedback from these speed sensors, ATC can react more quickly and effectively to changing road conditions, improving safety and control during driving.