Air Brakes Endorsement Test | Maine 2025 #1

Train for FREE online with our Maine CDL air brake test. The official exam test consists of several obligatory parts, with all of them checking your knowledge of different blocks of road rules. If you need to obtain a ME Class A/Class B driver license in 2025, practice as much as possible. Free sample tests published on our website will help you check and improve your knowledge and boost your grades. Please bear in mind that the requirements for CDL may vary from state to state.

Number of Question 25

Passing Score 20

Number of Tests 20

1 . If the spring brakes are on, you should:

Not use the brake pedal.

Press the accelerator.

Move the steering wheel.

Do not use the brake pedal when the spring brakes are on. This could damage the brakes by subjecting them to the combined forces of springs and air pressure.

2 . During a static leakage test, what is the maximum leakage rate that is safe for a double combination vehicle?

3 psi in one minute.

6 psi in one minute.

8 psi in one minute.

When performing a static leakage test on a double combination vehicle with air brakes, the leakage rate should be no more than 3 psi in one minute. If the air leaks from the air brake system at a quicker rate, the vehicle should not be driven because something likely needs to be repaired.

3 . What tells you how much pressure is in your vehicle's air tanks?

The supply pressure gauge

The ABS malfunction lamp

The tractor protection valve

A vehicle that is equipped with air brakes must also be equipped with a supply pressure gauge. This gauge tells the driver how much air pressure is in each of the vehicle's air tanks.

4 . Braking mechanisms are located inside:

The fifth wheel.

A brake drum.

The landing gear.

Drum brakes are attached to the wheels and located on the axles of a vehicle. The braking mechanisms that cause the vehicle to stop can be found inside of a drum brake.

5 . What kind of force do emergency brakes use?

Air pressure

Mechanical

Heavy

Air brakes are really three different braking systems: the service brake, the parking brake, and the emergency brake. Emergency and parking brakes are applied with mechanical force.

6 . Why should you regularly drain the air tanks?

Because the air gets old and needs to be replaced

Because compressed air contains some water and the water collects in the tanks

To allow for a change in pressure

Compressed air usually contains a certain amount of moisture and compressor oil, which can build up in the air storage tanks and damage the brake system. The tanks should be drained to clean out these accumulations. On a tank with a manual drain valve, draining should be performed at the end of each day of driving.

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2025 Maine | Frequently Asked Questions

A CDL Class A license in Maine permits the holder to operate any combination of vehicles with a Gross Vehicle Weight Rating (GVWR) of 26,001 pounds or more, provided the towed vehicle is heavier than 10,000 pounds. This typically includes tractor-trailers, truck and trailer combinations, tank vehicles, livestock carriers, and flatbeds.

A Class A CDL license allows the holder to operate vehicles such as tractor-trailers, truck and trailer combinations, tanker vehicles, livestock carriers, and flatbeds. Essentially, it permits operation of any combination of vehicles with a Gross Vehicle Weight Rating (GVWR) of 26,001 pounds or more, where the towed vehicle is heavier than 10,000 pounds.

To obtain a Class A CDL license in Maine, you must be at least 21 years old (18 for intrastate driving), have a valid driver's license, pass a vision test, and complete a written knowledge test. You must also pass a skills test, which includes a pre-trip vehicle inspection, basic vehicle control, and on-road driving. Medical examinations may also be required.

In Maine, you must be at least 21 years old to qualify for a Class A CDL license for interstate driving. However, if you plan to operate only within the state (intrastate driving), you can obtain a Class A CDL license at 18 years old.

Endorsements for a Class A CDL license in Maine are not required but are available to allow drivers to operate specific types of vehicles. These include endorsements for tank vehicles (N), passenger vehicles (P), school buses (S), and hazardous materials (H). Each endorsement requires passing an additional knowledge test and, in some cases, a skills test.

The Class A CDL skills test in Maine includes three main components: a pre-trip vehicle inspection to assess your ability to assess the vehicle's safety, a basic vehicle control test to evaluate your ability to manage the vehicle, and an on-road driving test where you demonstrate practical driving skills in various traffic situations.

Yes, limitations can be imposed on Class A CDL license holders in Maine. These restrictions could be related to the driver's medical condition, the type of vehicle, or the cargo. For instance, drivers with certain medical conditions may be restricted from operating commercial vehicles unless they have a medical variance.

The written Class A CDL test in Maine is generally provided in English, as federal regulations require a basic understanding of English to operate commercial vehicles. However, some states may offer the test in Spanish or other languages. It's best to contact the Maine Bureau of Motor Vehicles directly for specific language accommodations.

Yes, accommodations can be requested for the Class A CDL written test in Maine if you have a disability. The Bureau of Motor Vehicles is committed to ensuring equal access to all of their services. You should contact your local BMV office in advance to discuss your specific needs and the possible accommodations they can provide.

Yes, if you don't pass the Class A CDL written test in Maine, you can retake it. However, there's a waiting period of one business day before you can try again. There's also a retesting fee that you'll need to pay each time. It's recommended to study thoroughly before reattempting the test.