Michigan Commercial Driver's License (CDL) Practice Exam

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Prepare for the Michigan CDL Test with engaging quizzes and comprehensive explanations. Understand every aspect of the exam and ace it on your first try!

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What is a potential effect of using retarders when driving on slippery surfaces?

The vehicle will accelerate
The driver’s wheels can skid
It increases fuel efficiency
It enhances traction

The correct answer is: The driver’s wheels can skid

Using retarders while driving on slippery surfaces can indeed lead to skidding. Retarders, such as exhaust brakes or engine brakes, are designed to reduce the speed of the vehicle by applying a force in the opposite direction of travel. On slippery surfaces like ice or wet pavement, this force can cause the wheels to lock up or lose traction, resulting in a skid. This effect occurs because the sudden deceleration can disrupt the vehicle's balance and the friction between the tires and the road. When traction is already compromised due to slippery conditions, the added braking force from the retarder can exacerbate the situation, making it difficult for the driver to maintain control. Understanding this potential consequence is crucial for safe driving practices, particularly in adverse weather conditions.