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FREE 2024 Maryland (MD) Combination Exam Simulator 5

2024 MD Combination Information

The combination endorsement allows you to drive a commercial motor vehicle (CMV) with a trailer attached. The combination endorsement is required for a Class A CDL and allows only one trailer to be attached to the power unit. If you are looking to pull more than one trailer you will also need to take the doubles - triples endorsement.

The combination exam is comprised of 20 multiple choice questions covering the additional skills needed to operate a combination vehicle, which are usually heavier, longer, and require extra skill. You will need to score at least 80% (16 out of 20) to pass the combination exam.

We have 100 questions that you are likely to find on the combination endorsement exam. These questions follow the 2024 Maryland CDL drivers’ manual guidelines, they will help you add the combination endorsement to your CDL, and will provide immediate feedback with explanations to help you retain the information. Get started today and put yourself in the driver’s seat.

Image of Maryland's Driver's License

Based on the 2024 MD CDL Driver's Manual

MD Combination Fact Sheet
Questions on Test:
20
Correct answers needed to pass:
16
Passing Score:
80%
Age to apply:
18
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When you get ready to back under the semi-trailer you should line up:
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  1. When you get ready to back under the semi-trailer you should line up:
  2. Air lines on a combination vehicle are often color coded to keep them from getting mixed up. The emergency line is _____; the service line is _____.
  3. Low underneath clearance vehicles can be risky at railroad crossings because
  4. After you have coupled the trailer, you should start to raise the landing gear by using
  5. At what angle do you hold your airline glad hands when connecting them?
  6. If you do not do the final air brake check for air leaks and fix them before driving,
  7. Which type of truck-trailer combination has the greatest chance of a "crack-the-whip" rollover?
  8. Compared with a straight truck or bus, there are _______ things to inspect in combination vehicles.
  9. If the trailer has antilock brakes (ABS) but the tractor doesn't,
  10. The safety catch for the fifth wheel locking lever must be _____ for a coupling to be complete.
  11. To drive a triple combination vehicle, you must have
  12. Low underneath clearance vehicles can be risky at railroad crossings because
  13. To test the tractor protection valve, charge the trailer air brake system, turn off the engine, and
  14. Under good driving conditions, you should leave at least one second of space between your vehicle and the vehicle ahead for every ___ feet of your vehicle's length.
  15. If you do not do the final air brake check for air leaks and fix them before driving,
  16. What is a tractor jackknife?
  17. A tractor with a(n) _______ trailer requires the shortest amount of stopping distance.
  18. Air and electrical lines from the tractor to the trailer should be
  19. You should use chocks when parking a trailer without spring brakes because
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