CDL Practice Test


Welcome to the Maryland CDL practice test site. Questions on these practice tests are similar to those that are found on the Maryland CDL test and presented by the MVA. Use these practice test questions as you prepare to obtain a Maryland CDL. These tests are free and you may take them as many times as you would like. You will be presented with 40 questions and you must answer 34 questions correctly to pass. There is a 50-minute time limit. You may not go back once you answer a question. Click the "Start Test" button below to begin. 

1 / 40

Select what you should not do when coupling the glad hands.

2 / 40

The CDL manual indicates the last step on picking up students at the bus stop is as follows:

3 / 40

How do you hook a combination to a second trailer without spring brakes and without using wheel chocks?

4 / 40

Should the air pressure in the service air tanks fall below____the driver must be alerted via warning mechanism in the truck cab.

5 / 40

What is the correct number of red reflective triangles that you should carry?

6 / 40

Which of these statements about signaling is correct?

7 / 40

Start by___when coupling.

8 / 40

Select which vehicles are required to have a low air pressure warning signal:

9 / 40

Select the inappropriate way to test for the low pressure warning signal.

10 / 40

In the event of a tire failure you should...

11 / 40

A "transport index" relates to products that are:

12 / 40

This object releases the fifth wheel locking jaw to allow uncoupling.

13 / 40

This should be cleaned and then adjusted properly while inside the cab.

14 / 40

A driver that hauls hazardous materials must attend training every:

15 / 40

After deciding the type of evacuation that is necessary, the next step you must take is:

16 / 40

Which of the following is a recommended procedure when unloading the students?

17 / 40

Which of the following factors is NOT used to determine your safe speed when going down a long steep downgrade?

18 / 40

At what pressure is the safety valve in the air compressor tank set to open?

19 / 40

The _____of the kingpin has the locking jaw close around it.

20 / 40

What is the best way to prevent brakes form overheating while drive down a steep grade?

21 / 40

A battery box check is important. The battery must be secure, connection must be tight, and cell caps must be present. In addition these items should be checked:

22 / 40

The sliding mechanism and locking device for a tandem axle on trailers is:

23 / 40

If you are transporting cargo, you should inspect the cargo and securing devices:

24 / 40

This object should not move more than an inch by pulled by hand with the brakes released for manual slack adjusters.

25 / 40

Overhead inside mirror is used to:

26 / 40

How often should you check the tires on a placarded trailer that has dual tires?

27 / 40

You should___to reduce the air leakage rate.

28 / 40

What is the best way to figure out how many seconds of following distance you have?

29 / 40

What is the earliest way to notice a trailer skid?

30 / 40

"Outages" is the word to describe the amount of space required for liquids to expand in as they warm.

31 / 40

Unless you_____you will feel the effects of a liquid surge.

32 / 40

Water is drained from the compressed air tanks because:

33 / 40

You must keep shipping papers describing hazardous materials ______.

34 / 40

Do not tow or push a disabled bus with riders aboard the vehicle, unless:

35 / 40

How should you inspect a converter dolly?

36 / 40

Why should you test the tractor protection valve?

37 / 40

Select the true statement in regards to brake drums:

38 / 40

Select how you can tell if your vehicle is equipped with an anti-lock braking system:

39 / 40

When inspecting the_____you pump the pedals 3 times and then hold it down for 5 seconds feeling for no movement to occur.

40 / 40

When driving in very hot temperatures, you should:

Your score is

The average score is 28%

5/5 - (2 votes)

CDL Category Practice Tests

CDL Practice Test

How To Get A maryland Commercial Drivers License

Applicants can apply for any CDL and necessary endorsements when they are 21 years of age or older. Applicants may apply for a restricted CDL at the age of 18 years old. This restricted CDL limits the driver to intrastate driving and doesn’t allow HazMat Certification, driving double or triple trailers, or driving school buses with children on board. All applicants must possess a current DOT medical card to be considered for their CDL.

All drivers that have the following issues are considered disqualified from receiving their Maryland CDL.

  • Having a current license suspended, revoked, denied, or canceled.
  • Possessing more than one state driver’s license.
  • Having restricted CDL driving privileges in another state.
  • Being convicted of driving impaired within 24 months prior to submitting a CDL application.

All applicants must successfully pass both a skills test and a knowledge test in order to receive their Maryland CDL. To receive specific endorsements, individuals must pass examinations about the endorsement as well.

X – Tank and Hazmat Endorsement
H – Hazardous Materials
N – Tank Vehicles
P – Passenger Vehicles
T – Double / Triple Trailers

Hit the Open Road

maryland CDL License Test Tips

Knowledge tests are required to receive Class A, B, and C CDLs and endorsements. All applicants must take a 50 question test and pass with a score of 40 or higher to receive their CDL permit. Those applying for a Class A license must take a 70 question test, with 20 of the questions pertaining directly to combination vehicles. All endorsements require their own specific examination that has been 20 and 30 questions. All assessments must be passed with a score of 80 or higher.

Each applicant is required to complete a three-section skills assessment. This assessment is comprised of a vehicle inspection, driving test, and basic control test. To pass the skills portion of the CDL assessment, applicants must successfully show their knowledge in all three areas. Those seeking vehicle-specific endorsements must take the skills test in that specific type of vehicle they want the endorsement for.

Additional Information

Information on the Maryland Motor Vehicle Administration

The Maryland Motor Vehicle Administration provides the oversight and administration of CDL requirements in Maryland. To get more information contact them via:


Phone:  410.424.3011


Additional Maryland CDL Helpful Links

Please use the links below to access more valuable Maryland CDL testing resources and to learn more about practice driving tests for the state of Maryland.