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

Always try to back toward the driver's side because

you can see better, watching the vehicle rear out the side window

your truck will naturally pull toward the driver's side

it's more comfortable for turning your neck

all of these answers are correct

2 / 40

The system that needs to be checked for signs of leaks with rust or carbon soot and damage is the _____.

none of the answers listed

exhaust

air brake system

fifth wheel

3 / 40

Select the true statement about empty trucks:

empty trucks stop in the same distance as a fully loaded truck

they have poor traction due to wheel lockup and bouncing

empty trailers are easier to stop because there is not cargo shifting

they have a smaller stopping distance than full trailers

4 / 40

How can you check slack adjusters?

it is not possible to check manually

by pulling hard on each slack adjuster

by frequently checking the pressure gauge

by using a fixed wrench

5 / 40

What action should you take before driving while drowsy?

open your vehicle windows for some fresh air

drink energy drinks

drink a cup of coffee

pull off the road and get some sleep

6 / 40

It has just reached freezing. Which of the following areas is slippery?

a shaded area

all of these answers are correct

a bridge

wet-looking road

7 / 40

The walls that separate compartments inside the tanks and having openings at the top and bottom are called:

Bulktears

Baffles

Free walls

Layers

8 / 40

How much space should you see between the lower and upper fifth wheel when checking the coupling of a converter dolly?

1 to 1 1/2 inches

1/2 to 1 inch

it depends on how heavy the load is

none

9 / 40

What does it mean when the safety valve releases air?

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

pressure has passed 150 psi

there is too much air in the air compressor

all of these answers are correct

10 / 40

The trailer height is correct for connecting a converter dolly to a second or third trailer when:

the center of the kingpin is past the locking jaw

all answers listed

the trailer will rise slightly when the converter dolly is backed underneath it

the kingpin is over the fifth wheel

11 / 40

The most dangerous time during the school bus ride is:

Crossing railway crossing.

On long bus journeys.

When the students become unruly on the bus.

When loading and unloading students.

12 / 40

What is a king pin?

it is a pin that a driver receives for being a safe driver

it is a pin that locks the trailer to the tractor on the fifth wheel

it is a pin that locks the air brake lines together

it is a pin that holds the wheel on to the axles

13 / 40

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

the tractor will continue moving in a straight line no matter how you turn the steering wheel

none of the answers listed

the trailer will jackknife

the rig will continue straight ahead but will slide sideways

14 / 40

The best way to test if the spring brakes come on automatically is to:

apply pressure on and off the brake pedal until the manufacturer's low psi specification has been met for the spring brakes to deploy

all of these answers are correct

apply pressure on and off the brake pedal until the parkng brake valve pops out on tractor-trailer vehicles

apply pressure on and off the brake pedal until the parking valve pops out on single vehicles

15 / 40

What is the movement of the liquid called when the tanks are partially filled?

Knocking

Framing

Surging

Crashing

16 / 40

Buses are prohibited from carrying all of the following hazardous materials except:

Small-arms ammunition.

Properly secured tear gas canisters.

Properly labeled poison gas canisters.

Materials labeled radioactive in the space occupied by people.

17 / 40

What are spring brakes?

they are large springs that are held closed by air pressure if the air pressure is increased the brakes are applied

they are powerful springs that are restrained by air pressure when the air pressure is removed, the brakes are applied

they are big springs with air pressure in them if the air pressure decreases, the brakes are applied

none of the answers listed

18 / 40

Which hazard classes must you NEVER smoke, or perform any activity involving fire, within 25 feet of?

Class 2 only

Class 4 only

Class 1 only

Classes 1, 2, 3, and 4

19 / 40

What is the best way to figure out how many seconds of following distance you have?

use the stopwatch on your phone to try to determine how long before you reach a mile marker after the car in front of you appeared to reach it

get 1/4 closer to the car in front of you, then back off again multiply how long this took you by 4 for following distance

text a friend and tell them to text you back in ten seconds and see how long that seemed to take compared to how far you traveled

wait until a vehicle passes a shadow or landmark, then count the seconds until you pass it

20 / 40

Which of the following statements about overhead space is true?

athe heights posted at bridges are usually accurate

the weight of the cargo changes a truck's height

an empty van is lower than a loaded one

warning lights are always installed on low bridges and overpasses

21 / 40

If you are already carrying 100 pounds of silver cyanide, what precautions must you take if you are given papers at a dock to carry 100 cartons of battery acid?

Make sure the battery acid is loaded on top of the silver cyanide.

Make sure there is plenty of space between the two.

Make sure the silver cyanide is loaded on top of the battery acid.

Inform someone and not load the battery acid.

22 / 40

Select the true statement about tractor protection valve:

it provides the air supply to the brake system

if the air supply drops to a certain level it will automatically close itself

all of these answers are correct

it is closed by the parking brakes

23 / 40

Drivers placard their vehicle to _____ the risk.

minimize

elevate

take away

communicate

24 / 40

Select the true statement about emergency brakes:

they are required on all commercial vehicles

all of these answers are correct

they are required to be held on by a mechanical force

they are required to be activated the loss of air pressure

25 / 40

One reason hauling liquids in tank vehciles require special care is:

Because of strong winds.

Because of the extreme weight.

Because of uneven expansion.

Because of the movement of the liquid.

26 / 40

What is a common cause of tire fires?

overinflated tires

cold tires

underinflated tires

all of these answers are correct

27 / 40

When approaching a school bus stop, you should:

Activate your overhead amber lights.

All of these answers are correct.

Gradually decrease speed until the stop.

Continuously check all mirrors.

28 / 40

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

the last trailer of a double

the last trailer of a triple

a fully loaded trailer behind the tractor

any trailer

29 / 40

What is the normal operating range for a truck's oil pressure?

This is engine-specific

30-75 psi

40-60 psi

20-30 psi

30 / 40

Select the two things that are important in preventing a rollover:

the length and weight of the vehicle

drive slowly around turns and keep the center of gravity of the cargo as high as possible

drive slowly around turns and keep the cargo as close to the ground as possible

maintaining properly inflated tires and an even load on the trailer

31 / 40

For any flatbed load you must have at least ____ tie downs.

six

four

one

two

32 / 40

You should keep a minimum of ____between another vehicle and the double trailer with 100 ft truck driving at 30 mph.

15 seconds

10 seconds

8 seconds

13 seconds

33 / 40

To be sure that air is supplied to the second trailer:

keep an eye of the air gauge for a drop of 30 psi

crank the engine brake

open the emergency line shut off at the back of the second trailer

while driving at 10 mph, use the hand valve. The vehicle should stop in the same distance of a single trailer moving at 5 mph

34 / 40

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

150 psi

125 psi

100 psi

75 psi

35 / 40

What is the best way to prevent brakes form overheating while drive down a steep grade?

drive at a speed of 5 mph below your safe speed

use the trailer brakes only

use countersteering practices

use the stab braking method

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

20 psi

They should never pop out

70 psi

37 / 40

Which of the following is NOT a part of the steering system?

tie rod

hydraulic fluid reservoir

steering knuckle

main spring

38 / 40

What method should be used to test that the air is flowing to all the trailers?

listen for air flow after opening the shutoff valves at the rear of the last trailer

only a certified mechanic can check for this

pump the brakes with the windows down

check the pressure indicator dial on the final trailer

39 / 40

An example of a low pressure warning signal for air brakes is:

a buzzer

red light

all of these answers are correct

a wig wag mechanical arm

40 / 40

The correct trailer height when coupling the rear trailer is:

when the locking jaws are open around the kingpin

there is 5 inches of space between the lower and upper fifth wheel

slightly lower than the center of the fifth wheel

the kingpin is touching the fifth wheel

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