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Commercial Drivers License Exam Prep

Category - CDL

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When retarders are turned ON, they apply braking power:

To all wheels on the tractor but not to the trailer
To all wheels, truck and trailer alike
To the drive wheels only
Only to the tractor wheels

Explanation

Answer: C - Retarders apply braking power only to the drive wheels. They have no effect on any other wheels, including those on the trailer being towed. Retarders can be turned on or off by the driver and some are adjustable. Retarders, also known as "jake brakes," can be very loud and are not allowed in some areas. This restriction is normally posted.

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Commercial Drivers License Exam Prep

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Commercial Drivers License Exam Prep

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