Practice question

What is the function of the Automatic Traction Control (ATC / ASR) system on heavy commercial trucks?

To steer the truck automatically on highways
To prevent drive wheel spin during acceleration on slippery, wet, or icy roads by applying light individual wheel braking or reducing engine torque, maintaining vehicle stability and forward traction
To deflate the rear tires
To disconnect the semi-trailer

Answer: B — To prevent drive wheel spin during acceleration on slippery, wet, or icy roads by applying light individual wheel braking or reducing engine torque, maintaining vehicle stability and forward traction

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