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 New Jersey 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.

Number of Question
Passing Score

8. If you need to back your trailer but cannot back up in a straight path, you should:

Explanation
If you need to back your trailer but cannot back up in a straight path, you should back on a curved path toward the driver's side of the vehicle. This will permit you the best possible visibility while backing.

9. Which of the following is acceptable?

Explanation
When inspecting a vehicle, you should ensure that dual tires do not come into contact with each other or with other parts of the vehicle. Tire sizes should not be mismatched, and tires should not be cut or damaged in any way. Regrooved, recapped, or retreaded tires are not permitted to be used on the front wheels of a bus.

10. How can you avoid becoming drowsy on a trip?

Explanation
Strategies to reduce the risk of fatigue while driving include getting seven to eight hours of sleep beforehand; scheduling trips for the hours during which you are normally awake; planning to take breaks during the trip; and exercising regularly.

11. A vehicle equipped with an Anti-Lock Braking System (ABS) uses a ____ light to warn that the system is not working properly.

Explanation
Anti-Lock Braking System (ABS) malfunction lamps are usually yellow. Even if the ABS isn't working properly, a driver will still have access to the vehicle's usual braking functions.

12. When approaching a railroad crossing, you should:

Explanation
As a precaution, you should always approach a railroad crossing under the assumption that a train is coming. Do not rely only on signals or your hearing to indicate that a train is approaching.

13. Which of the following is not a sign of fatigue?

Explanation
Driving while fatigued is dangerous. Warning signs of fatigue include difficulty focusing; repeated yawning or rubbing of the eyes; daydreaming or wandering thoughts; and drifting out of your lane.

14. When parked on the side of the road, you should:

Explanation
Always turn on your four-way emergency flashers if you must park on the side of the road. This is especially important when traveling at night.
DMV Writen Test Logo