CDL Practice Test


Welcome to the Maine CDL practice test site. Questions on these practice tests are designed to mirror those that are found on the Maine CDL test. These tests are complimentary 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 Quiz" button below to begin.

1 / 40

What should the driver pay special attention to when driving smaller tanks?

2 / 40

Do converter dollies have spring brakes?

3 / 40

The best way to describe a dual air brake system is:

4 / 40

You should_____when the low pressure warning is activated:

5 / 40

Which of the following will confirm that you are driving with anti-lock brakes?

6 / 40

You need to raise the landing gear just to the height of where it clears the pavement before driving.

7 / 40

What is the next step after securing the bus when you have an unruly child on board?

8 / 40

The method for testing hydraulic brakes for leaks is to _____.

9 / 40

A minimum tread depth of 2/32 inch is required for:

10 / 40

You should look into the back of the fifth wheel on a dolly to see if it is locked onto the kingpin.

11 / 40

What should you hook up before backing a tractor to a trailer for coupling?

12 / 40

If there is no traffic light or attendant, how far from the draw of a drawbridge must you stop?

13 / 40

When should you drain air tanks that do not have an automatic tank drain?

14 / 40

This object should not be worn dangerously thin where visible.

15 / 40

What is the brake system that applies and releases the brakes when the brake pedal is used?

16 / 40

How do you check the power steering fluid?

17 / 40

Select which is not a mandatory emergency equipment:

18 / 40

Select the statement that describes how you could damage the landing gear.

19 / 40

Which of the following is a clue another driver is impaired:

20 / 40

How do you test your service brakes?

21 / 40

This object should not be damaged, bent, or rusted through and be evenly centered with the tires and dual wheels evenly separated.

22 / 40

You should adjust all the outside left and right side convex mirrors to see:

23 / 40

Select why you should not use the trailer hand valve while driving:

24 / 40

What are shippers trying to accomplish when they package the material?

25 / 40

The Emergency Response Guide, ERG, can best be explained as _____.

26 / 40

A tractor should not be backed under a trailer until the whole air system is:

27 / 40

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

28 / 40

Select the statement that describes smooth bore tanks:

29 / 40

When should air tanks be drained?

30 / 40

A portable tank differs from a cargo tank in that ______.

31 / 40

If you work for an interstate carrier:

32 / 40

A shipper’s certification is best described as _____.

33 / 40

Select the true statement about what the Air Compressor Governor controls:

34 / 40

You should be in the proper gear before going down a hill because:

35 / 40

Select the true statement in regards to handing triples and doubles

36 / 40

The amount of liquid you can carry depends on:

37 / 40

Select the true statement about converter dollies:

38 / 40

Be careful to check the_____when unloading the smaller tanks of bulk heads.

39 / 40

What school bus accidents should be reported?

40 / 40

Play of the steering wheel should not exceed:

Your score is

The average score is 0%

4.5/5 - (2 votes)

CDL Category Practice Tests

CDL Practice Test

How To Get A maine Commercial Drivers License

Applicants can apply for their CDL at the age of 21 years old. Those who are between the ages of 18 years old and 21 years old can apply for a CDL with some restrictions. These drivers cannot possess a HazMat Endorsement, drive doubles or triples, or drive out of the state of Maine. All applicants for a Maine CDL must possess a Medical Examiner’s Certificate or DOT medical card.

Any of the following instances will disqualify a driver from obtaining their CDL in the state of Maine.

  • Having a currently suspended, denied, canceled, or revoked driver’s license.
  • Having more than one driver’s license from multiple states.
  • Being convicted of driving impaired in a commercial vehicle 24 months prior to applying.
  • Having CDL driving privileges revoked in another state.

Applicants applying for a Maine CDL must successfully complete the necessary knowledge and skills test to receive their new driving privileges.

H – Hazardous Materials
N – Tank Vehicles
P – Passenger Transport
T – Doubles / Triples
X – HazMat and Tank Vehicles
L – Air Brakes
S – School Bus

Hit the Open Road

maine CDL License Test Tips

To obtain a Maine CDL and any special endorsements individuals must take one or more knowledge tests. To get a Class A, B, and C commercial driver’s license you must pass a 50 question general knowledge test relating to commercial driving. Class A applicants will need to answer an additional 20 questions about combination driving. When an applicant is seeking endorsements, they will be required to complete one additional knowledge test per endorsement. Tank Vehicle, Doubles, Triples, and Passenger Endorsements all have 20 questions assessments. School Bus Endorsements and Air Brake Restriction Removals require a 25 question test.

Once an applicant passes all necessary knowledge tests, they will be required to complete a skills test. This tests the applicant’s knowledge of hands on driving experience, vehicle inspection, and basic vehicle control. All applicants applying for Passenger Transport and School Bus Endorsements as well as removal of the Air Brakes Restriction must pass an additional skills test.

Additional Information

Information on the Maine Secretary of State Bureau of Motor Vehicles

The Maine Bureau of Motor Vehicles provides the oversight and administration of CDL requirements in Maine. To get more information contact them via:


Phone:  207.624.9000


Additional Maine CDL Helpful Links

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