Double

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.. Read More

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 four possible answer choices. Test questions come from the West Virginia Commercial Driver’s License Manual. 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.

Number of Question
Passing Score

1. Which of the following is not another name for convex mirrors?

Explanation
Convex mirrors are also known as "fisheye", "spot", or "bug-eye" mirrors.

2. Which of the following is acceptable if found during a pre-trip inspection?

Explanation
When inspecting your tires, verify that there is tread depth of at least 4/32 of an inch in every major groove on the front tires and tread depth of at least 2/32 of an inch in grooves on the other tires. Be sure that your tires are not too worn, are not cracked, have proper air pressure, and are all equally sized.

3. Large combination vehicles take the longest amount of time to stop:

Explanation
Large combination vehicles take longer to stop when they are empty than when they are loaded. The decreased weight causes a vehicle's wheels to have decreased traction on the surface of the road.

4. During a pre-trip inspection of the upper fifth wheel, the glide plate should be:

Explanation
It is important to always perform a thorough pre-trip inspection before beginning a drive. When inspecting the upper fifth wheel, the glide plate should be securely mounted to the trailer frame.

5. When driving at highway speeds, you should watch the road about ____ ahead of your vehicle.

Explanation
Stay aware of upcoming obstacles and hazards by consistently watching the road at least 12 to 15 seconds ahead of your vehicle. When traveling at highway speeds, this is equivalent to about a quarter of a mile.

6. Rough acceleration:

Explanation
Accelerate smoothly and gradually. Rough acceleration can cause mechanical damage.

7. Fatigue:

Explanation
Driving while fatigued is dangerous and increases the risk of a crash. Take precautions before a trip to prevent driving while fatigued.
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