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Maine CDL practice test

Getting a commercial driver's licence in Maine starts with the CDL knowledge tests. The content is federal: every state, Maine included, writes its tests from the FMCSA CDL manual, so the general knowledge test has 50 questions, the endorsement tests have 20 to 30, and the passing score is 80% on each. The Maine driver licensing agency administers the test; the rules behind it are published by the FMCSA. Try the free Maine CDL practice questions below, then pick a full test.

Free Maine CDL practice questions

Five questions from the general knowledge, air brakes and combination vehicles banks, the three tests most Maine Class A applicants take first. Show the answer to read the explanation.

  1. In hot weather, how often should you stop and check your tires?

    • Every 30 minutes
    • Every 8 hours
    • Only at the start and end of the day
    • Every 2 hours or 100 miles
    Show answer
    Answer: D. Every 2 hours or 100 miles

    Heat builds up in tires on hot pavement and can cause a blowout or a fire. Check pressure and temperature every two hours or 100 miles.

    Source: FMCSA CDL Manual, Section 2.14.1 (Vehicle Checks for Hot Weather: Tires)

  2. If a tire is too hot to touch, you should:

    • Stay stopped until it cools off; do not let air out
    • Let some air out so the pressure drops
    • Pour water on it and keep driving
    • Drive faster so the wind cools it
    Show answer
    Answer: A. Stay stopped until it cools off; do not let air out

    Heat raises tire pressure, but letting air out means the tire will be under-inflated once it cools, which builds even more heat. Wait for it to cool, or the tire may blow out or catch fire.

    Source: FMCSA CDL Manual, Section 2.14.1 (Tires)

  3. On very hot days, tar can 'bleed' to the road surface. These spots are:

    • Safer because the tar fills in cracks
    • Very slippery
    • Only a problem for motorcycles
    • Softer and better for traction
    Show answer
    Answer: B. Very slippery

    Bleeding tar makes a slick film on the pavement. Watch for shiny dark patches on hot days and slow down before you reach them.

    Source: FMCSA CDL Manual, Section 2.14.2 (Bleeding Tar)

  4. You need to add coolant to a hot engine that does not have a recovery tank. You should:

    • Remove the cap right away so the steam can escape
    • Pour cold water in through the overflow hose
    • Wait until the engine cools, then turn the cap slowly to the first stop to release pressure before removing it
    • Add coolant while the engine is running at high rpm
    Show answer
    Answer: C. Wait until the engine cools, then turn the cap slowly to the first stop to release pressure before removing it

    A hot cooling system is under pressure, and opening the cap suddenly sprays scalding coolant. Let it cool, protect your hands, and open the cap in stages.

    Source: FMCSA CDL Manual, Section 2.14.1 (Engine Coolant)

  5. The safe speed for a long downgrade depends on:

    • Only the posted speed limit
    • Only the gear you climbed the hill in
    • How much fuel is in the tank
    • The total weight of the vehicle and cargo, the length and steepness of the grade, the road conditions, and the weather
    Show answer
    Answer: D. The total weight of the vehicle and cargo, the length and steepness of the grade, the road conditions, and the weather

    Gravity pulls a heavy vehicle faster on a downgrade. Pick a speed that is safe for your load, the grade, and the conditions, and never go faster than the posted truck speed for the hill.

    Source: FMCSA CDL Manual, Section 2.16 (Mountain Driving)

Every CDL test for Maine drivers

Each page has ten free sample questions, the real question count, the 80% pass mark and what the test covers.

How the Maine CDL knowledge test works

You take the general knowledge test first; it is required for every CDL class. Class A drivers add the combination vehicles test. Almost everyone takes the air brakes test, because skipping it puts an air brake restriction on the licence. Endorsements (hazmat, tanker, doubles/triples, passenger, school bus) each have their own knowledge test. Pass the tests and you hold a commercial learner's permit; the skills test in a truck comes later.

Fees, appointment rules and test centre locations are set by Maine and change over time, so check the state driver licensing agency before you go. What does not change is the content, and that is what PassRig drills.

Maine CDL test questions

How many questions are on the Maine CDL test?

The Maine CDL general knowledge test follows the federal model: 50 questions, 40 correct to pass. Endorsement tests are shorter: air brakes 25, hazmat 30, and combination vehicles, tanker, doubles/triples, passenger and school bus 20 each.

What is the passing score on the Maine CDL permit test?

80% on every knowledge test, the same pass mark used across the United States.

Where do I take the CDL knowledge test in Maine?

At the Maine state driver licensing agency (the DMV, DOT or equivalent). Check its website for locations, appointments and current fees; the test content itself comes from the FMCSA CDL manual.

Does PassRig have Maine CDL practice questions?

Yes. Pick Maine in the app and you get practice sets and mock exams built from the knowledge test content your state uses, with the real counts and the 80% line.

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