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

Which of the following statements about downshifting is NOT true?

2 / 40

Select the true statement in regards to brake drums or discs:

3 / 40

All standing riders must stay:

4 / 40

Cylinders containing compressed gases may only be loaded onto a vehicle without a flat floor or platform if the cylinders are:

5 / 40

This object should not be spliced, cut, chafed, or worn through to allow steel braid to show.

6 / 40

What type fire extinguisher is required in the power unit of a placarded vehicle?

7 / 40

What should you check for when inspecting a converter dolly?

8 / 40

You should_____when the low pressure warning is activated:

9 / 40

Select the true statement in regards to quick steering movements and double trailers:

10 / 40

The trailer should be lowered so that _____.

11 / 40

If you are driving a 100-foot truck with double trailers at 30 mph in dry conditions, how many seconds of space should there be between your truck and other vehicles?

12 / 40

This object is not checked at the rear of the trailer.

13 / 40

You may use DANGEROUS placards instead of separate placards for each Table 2 hazard class when:

14 / 40

If you are drowsy, you should _____ before you drive.

15 / 40

To transport cargo safely, which of these are you NOT responsible for?

16 / 40

Select the true statement about double or triple trailers.

17 / 40

If you are hauling hazardous materials and have ___ tires on your vehicle, you must stop and check them every time you park.

18 / 40

At what "cut out" level does the governor stop pumping air?

19 / 40

Which of the following is a reason to evacuate the school bus?

20 / 40

You should check your tires every ____ or every ____ when driving in very hot weather.

21 / 40

A truck with baffles will handle:

22 / 40

The blind spot behind the bus could extend to how many feet?

23 / 40

You must control how far packages labeled "Radioactive II" or "Radioactive III" are located from people and cargo space walls by referring to:

24 / 40

You can be sure air is supplied to the second trailer by:

25 / 40

What is a technical name?

26 / 40

What should you do if the low air pressure warning comes on for only one system in a truck or bus that has a dual air brake system?

27 / 40

Select the statement that best describes what the service line is for.

28 / 40

Which of the following is something the driver must watch for:

29 / 40

When is it best to wear your seat belt?

30 / 40

The gauge that needs to come up to normal levels after starting the engine within a few seconds is _____.

31 / 40

You should never brake and should rely only steering inputs to avoid a crash while driving a tanker truck.

32 / 40

Select the true statement in regards to managing the space to the sides:

33 / 40

What is the value of the overhead rear-view mirror inside of the bus?

34 / 40

If you double your speed, what will happen to your stopping distance?

35 / 40

What is most likely to occur when driving a set of doubles and a set of trailer wheels goes into a skid?

36 / 40

Which trailer is most likely to tip over due to the crack the whip effect?

37 / 40

The belt that you need to make sure is securely mounted, without frays, and adjusts and latches properly is the:

38 / 40

This gauge will indicate if the generator or alternator is charging:

39 / 40

Select the reason as to why you should not use the trailer hand valve while driving.

40 / 40

Before pulling away, make sure the landing gear of the trailer is:

Your score is

The average score is 55%

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.