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Tennessee CDL Permit Test - Double

Number of questions: 20
Passing score: 16
Directions: This endorsement is required if the driver will pull two or three trailers. To receive this endorsement, applicants must pass a test. The test consists of 20 multiple choice questions. To pass, the applicant must answer at least 16 questions correctly. Each question has three or four possible answer choices. Test questions come from the Commercial Driver Guide. Questions come from chapters covering: Driving Safely, Air Brakes (if applicable), Combination Vehicles and Doubles and Triples. The Double/Triple endorsement can be used with the Class A CDL.
You have made error so far
Passing grade —
4 or fewer errors

Driving at night is usually:

More difficult than driving during the day.
Simpler than driving during the day.

After a tire has been changed, the driver should stop after a short distance of driving to:

Recheck the tightness of the lug nuts.
See if rocks have gotten into the tread.
Polish the tire.

A slack adjuster should move no more than ____ from where it is attached to the push rod.

Two inches
Five inches
One inch

Be sure that your wheel bearing/seals are:

Not leaking.

When a tire goes flat, you may hear a loud bang. The truck will be affected:

After a short delay.
Only if the damaged tire is near the front of the truck.
Only if the truck is hauling a load.

To prevent trailers from rolling over, a driver should do all of the following, except:

Steer gently.
Drive slowly around corners.
Drive slowly on curves.
Exceed the speed limit.

If you are driving so slowly that you could impede other vehicles, you should:

Stay in the left lane.
Drive with your emergency flashers activated.
Not use any lights.
Wave an arm out of your window.
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