maine
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

The minimum tread depth for tires other than the front tires is ____.

1/32

3/32

2/32

4/32

2 / 40

After the initial drop, the maximum leakage rates per minute is:

6 psi for a combination vehicle and 5 psi for single vehicle

3 psi for combination vehicle and 1 psi for single vehicle

10 psi for combination vehicle and 5 psi for single vehicle

4 psi for a combination vehicle and 3 psi for a single vehicle

3 / 40

Select the factors that can cause your brakes to fade or fail:

not relying on engine braking enough

the brakes are out of adjustment

using the service brakes excessively

all of these answers are correct

4 / 40

Make sure that____when the front trailer supports are up and the trailer is resting on the tractor.

the safety latch is in the open position

the kingpin has been removed

there is enough clearance between the lower and upper fifth wheel

there is enough clearance between the landing gear and the tractor frame

5 / 40

Select the portion of the combination vehicle that is most likely to turn over suddenly when pulling a double trailer:

the back trailer

all are equally likely

the tractor

the front trailer

6 / 40

While completing the 2nd component of the air brake check you are required to turn the electrical power on, begin fanning off the air pressure by rapidly relasing and apply the foot brake and _____.

a low air warning device should sound before the air pressure drops below 60 psi

none of the answers listed

a low air warning device should sound before the air pressure drops below 40 psi

the tractor protection valve and parking brake valve should pop out before air pressure falls below 60 psi for combination vehicles

7 / 40

What does outage mean?

It is how quickly the tanks drain.

It is the weight of the liquid.

It is the allowance needed for the expansion of liquid.

It is the movement of the liquid.

8 / 40

Which of the following is a necessary qualification for non-bulk packaging?

Maximum net mass of 400 kg, or less than 450 l if used as a receptacle for a solid.

All of these answers are necessary qualifications.

Maximum water capacity of 454 kg or less if used as a receptacle for gases.

A maximum capacity of 450 l or less if it is used as a receptacle for liquids.

9 / 40

Should your air compressor stop working:

there will still be air pressure left in the air tanks

you will lose your ability to brake immediately

the brakes will lock up on you immediately

there will be no affect to your brakes

10 / 40

What is most likely to occur when the front wheels begin to skid?

The power of the surge will disconnect the tank from the truck.

All answers listed.

You will continue heading in a straight line and moving forward no matter what direction you turn the steering wheel.

A roll over will occur.

11 / 40

Where should the safety catch for the fifth wheel locking lever be located for coupling to be complete?

outside of the locking lever

above the locking lever

below the locking lever

through the locking lever

12 / 40

You are checking the_______when looking at the dipstick to see if the lubrication is at the safe operating range or above the refill line.

oil level

coolant level

battery fluid level

washer fluid level

13 / 40

Signs of distracted drivers include:

vehicles exiting the roadway

individuals driving at a consistent speed above the speed limit

drivers having conversations with passengers

individuals listening to music too loudly

14 / 40

Select the true statement in regards to driving a truck with triple or double trailers:

the truck requires increased following distance compared to smaller vehicles

the risk of trailer jackknifes and tipping is increased compared to shorter trucks

all answers listed

extra care should be taken when driving in bad weather and in the mountains

15 / 40

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

225 psi

100 psi

125 psi

150 psi

16 / 40

Select the true statement about slack adjusters:

they do not ever need to be adjusted

they should move a minimum of 2 inches from the push rod attachment

they can be adjusted automatically or manually

they should only be adjusted by a mechanic that is certified in slack adjusters

17 / 40

While completing the 1st component of the air brake check you are required to fully push down on the foot brake and _____.

both of the answers listed

see if the air pressure drops more than 3 lbs in a minute while holding it down for that full minute in a single vehicle

see if the air pressure drops more than 4 lbs in a minute while holding it down for a full minute in a combination vehicle

none of the answers listed

18 / 40

What does it mean when the safety valve releases air?

pressure has passed 150 psi

you need it to have it checked out by a mechanic because something is wrong

all of these answers are correct

there is too much air in the air compressor

19 / 40

Select the definition of "off-tracking."

none of the answers listed

it is wheen the rear wheel skid and the front wheels maintain a straight path

it is when the rear wheels of the vehicle follow a different path way than that of the front wheels

it is when the trailer wheels go in a different direction from the front wheels

20 / 40

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

they should not have cracks that are longer than half the width of the friction area

the linings should fit loosely around the brake shoe

they are not allowed to have any cracks

they should always be kept well-greased up

21 / 40

A commercial motor vehicle (CMV) is defined as:

a vehicle with a gross weight over 26,001 lbs

a vehicle transporting 16 or more passengers

a vehicle transporting hazardous materials

all of these answers are correct

22 / 40

The interlock system for the brake and accelerator on a transit coach may be used:

To replace the parking brake.

All of these answers are correct.

To replace the rear door emergency buzzer.

As a safety feature when the exit door is open.

23 / 40

How do you know when your brakes are fading?

the brake pedal flops to the cabin floor

your speed increases when pressure is removed from the brake pedal

to control your speed on a downgrade you have to apply less pressure to the break pedal

to control your speed on a downgrade you have to push harder on the brake pedal

24 / 40

Select the true statement in regards to what the fifth wheel should be checked for.

if there is any missing or damaged parts

all answers listed

if the jaws are open

if it is properly greased

25 / 40

What can you do at an accident site to help avoid another accident?

stay in your vehicle and do nothing until help arrives

put out warning devices so people don't run into the accident site

have a drink to calm your nerves

leave your vehicle, do nothing, and get to higher ground

26 / 40

Mirrors with a convex surface or "spot" mirrors _____.

make things look farther away and smaller than they actually are

they show a larger area than flat mirrors so do not need to be checked as often

make things look closer and larger than they actually are

are illegal in most states

27 / 40

The front trailer supports should be____before driving away.

3 turns down from the top and the crank handle secured in its bracket

raised 1/3 of the way with the crank handle secured in its bracket

raised 1/2 way with the crank handle secured in its bracket

raised fully and the crank handle secured in its bracket

28 / 40

You should___to reduce the air leakage rate.

monitor the air pressure gauge as you press on the brake pedal

leave the engine running while charging the air system

release the service brake after turning off the engine

release the service brake as the engine is running

29 / 40

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

back under the trailer in a straight path

have the trailer kingpin centered over the fifth wheel

back under the trailer at an angle

have the tractor and trailer aligned

30 / 40

You need to be extra careful when driving smooth bore tanks:

When hauling food or milk products.

All answers listed.

When unloading or loading.

When stopping or starting.

31 / 40

The most stable tanker shape is:

Square

Cylindrical

Elliptical

Round

32 / 40

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

True, but only on downgrades

True

False

True, but only in ideal conditions

33 / 40

What does the service brake system do?

they are part of an official vehicle inspection

they are valves that maintain air tank pressure

under normal driving it applies and releases the brakes by using the brake pedal

they are only on vehicles that have hydraulic brakes

34 / 40

In what position should the shut off valves on a the rear of the front trailer be in on a set of double trailers?

in a closed position

in a 1/3 way open position

in an open position

in a halfway open position

35 / 40

Before backing under the trailer you should______when coupling a tractor and trailer with air lines already connected.

have the trailer brakes off

press down on the brake pedal twice

all answers listed

supply air to the trailer system and then pull the air supply knob out

36 / 40

While completing the 3rd component of the air brake check of a combination vehicle, at what psi should the tracor protection valve and parking brake valve should pop out?

40 psi

70 psi

They should never pop out

20 psi

37 / 40

The shipping papers for hazardous materials can be found:

In clear view, within reach while driving.

On the driver's seat when out of the vehicle.

In a pouch on the driver's door.

Any of the above locations.

38 / 40

When you discharge an unruly passenger, you must choose a place that is:

Off the regular route.

Dark and poorly lighted.

As safe as possible, or the next stop.

The next stop.

39 / 40

When accelerating:

always use the parking brake to slow down

"hammer down" when your wheels start to spin

speed up smoothly and gradually and avoid jerking

do not engage the clutch before you take your foot off the brake

40 / 40

You should___when driving down a long steep hill.

repeatedly pump the brake pedal

use the engine brakes only

begin braking once the vehicle is 10 mph above safe speed

release the brake once the vehicle is traveling 5 mph below the safe speed

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.

Endorsements
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:

Website: https://www.maine.gov/sos/bmv/commercial/index.html

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.

maine CDL Practice Test

CDL Category Practice Tests

CDL Practice Test

How To Get A maine Commercial Drivers License

Hit the Open Road

maine CDL License Test Tips

Additional Information

Information on the Maine Secretary of State Bureau of Motor Vehicles

Additional Maine CDL Helpful Links

maine
CDL Practice Test