maryland
CDL Practice Test

Welcome to the Maryland CDL practice test site. Questions on these practice tests are similar to those that are found on the Maryland CDL test and presented by the MVA. Use these practice test questions as you prepare to obtain a Maryland CDL. These tests are free 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 Test" button below to begin.

1 / 40

You must have placards for explosives, poison gas or flammables exceeding:

100 pounds

Any amount

10 pounds

10 cartons

2 / 40

A trailer is at the right height to have the tractor backed up to it when:

the top of the kingpin is even with the bottom of the fifth wheel

the kingpin is about 1 1/5 inches above the fifth wheel

it'll raise slightly when the tractor is backed up under it

the fifth wheel will not come in contact with the kingpin

3 / 40

This carries hydraulic fluid or air to the wheel brake assemby.

Brake drums

Brake lines/hoses

Connector rods

Slack pieces

4 / 40

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

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

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

both of the answers listed

5 / 40

In column 1, the "D" symbol means:

Devices

Detonators

Domestic restrictions

Domestic transportation

6 / 40

The safety catch for the fifth wheel locking lever must be ____ for a coupling to be complete.

above the locking lever

below the locking lever

sticking straight up

threaded through the locking lever

7 / 40

Air tanks need to be drained:

air tanks should absolutely never be drained

to prevent water and oil from building up in the tank

to keep the tanks warm when not in use

to keep the tanks cold when not in use

8 / 40

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

The transport index and the separation distances table.

The list of hazardous materials and reportable quantities.

The table of hazardous materials.

The segregation and separation chart.

9 / 40

What handling effect should you expect when your tank has baffles?

There is no difference in handling when you have baffles.

There will not be as much side to side surge compared to a tank without baffles.

There will not be as much front to back surge compared to a tank without baffles.

The surge will be slower than a tank without baffles.

10 / 40

The best way to describe a dual air brake system is:

there are 2 separate air brake systems that have their own hoses, lines etc

there is a primary and secondary system that is 2 separate air brake systems

there are 2 separate air brake systems that supply air to the trailer if there is one

all of these answers are correct

11 / 40

Select the true statement in regards to the center of gravity for tanks:

The vehicle can turn over even when driving at the posted speed limit for curves.

The center of gravity is generally lower than with other large trucks.

None of the answers listed.

The vehicle can handle higher speeds around curves than other large trucks.

12 / 40

Select the true statement in regards to brake drums:

All of these answers are correct.

They are located at both ends of the axles of the vehicle.

Hold the brake linings and shoes.

They are bolted to the wheels.

13 / 40

How do you check the air flow to the last trailer?

pull the vehicle forward and then step on the brakes

watch the brake lights as you step on the brake pedal

while on an level surface, test the emergency brake lines

listen for escaping air after opening the emergency shut off valve

14 / 40

Which of the following hazard classes utilizes a transport index in order to determine how much of it can be loaded on a single vehicle for transport?

Class 1—explosives

Class 7—radioactive materials

Class 3—flammable liquids

Class 4—live chickens

15 / 40

What will probably happen if the converter dolly is still under the second trailer and the pintle hook is unhooked?

the dolly tow bar could fly up

nothing will happen

the engine brakes will unlock

the air lines will explode

16 / 40

Two causes of tire fires are ______.

under-inflated tires and duals that touch

under-inflated tires and poor retreads

hot brakes and under-inflated tires

duals that touch and road debris

17 / 40

On the Hazardous Materials Table, column 1 shows:

How much of the material can be put in a vehicle without placarding.

To what shipping mode the information on that line applies.

How to ship an item.

What materials can be loaded together.

18 / 40

You should check that the following makes an audible noise:

Radio system

Electric or air horn

Engine brakes

Air leaks

19 / 40

A drawbridge does not have a traffic light showing green or a traffic control attendant. How many feet before the draw of a bridge must a bus driver stop?

At least 25 feet.

At least 100 feet.

At least 50 feet.

At least 75 feet.

20 / 40

When you have a major leak in the service line and put on the brake, the service air pressure will escape and cause the:

none of the ansers listed

the trailer tank pressure to decrease

the trailer emergency brakes to activate

the tractor spring brakes to activate

21 / 40

Select the true statement about retest markings:

Must have a date of the last retest marked.

All answers listed.

It shows what type of inspection or test was completed.

They must be stamped on the tank.

22 / 40

Select the false statement about tractor protection valves.

air is allowed to leak from the tractor line when it is closed

if the air pressure is low it will automatically close

should the trailer air leak, it keeps the air in the tractor

the trailer air supply valve in the cab controls it

23 / 40

You should make sure the_____before backing under a trailer.

trailer brakes are locked down

air brakes have been shut off

landing gear is fully raised

tractor shut off valve is normal

24 / 40

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

radial

bias

dual

treaded

25 / 40

Select the step that comes first:

apply a firm pressure to the trailer brakes

shift into reverse

connect the air supply lines

lower the landing gear

26 / 40

Carry-on baggage cannot be stored:

Under the seat.

Behind the seats.

In the aisles and stairwells.

On the seats.

27 / 40

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

any trailer

the last trailer of a triple

a fully loaded trailer behind the tractor

the last trailer of a double

28 / 40

Select the correct setup for shut-off valves:

the rear shut-off valves are closed and the front trailer valves are open

the front and back shut-off valves are closed

the front shut-off valves are closed and the rear trailer valves are open

the front and back shut-off valves are open

29 / 40

Where are shut-off valves located?

at the front of the trailer

at the front and back of the trailer

either at the front or the back of the trailer

at the back of the trailer

30 / 40

The locking jaws of the kingpin should close around:

the tip

the apex

the base

the shank

31 / 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

32 / 40

When is it best to wear your seat belt?

Always.

Only if your bus holds more than 27 people.

Only when you will be driving over 35 mph.

Only if required by company policy.

33 / 40

With Division 1.1, 1.2, or 1.3 Class A or B, how close can you park to a bridge, tunnel, or building?

Do not park within 100 feet.

Do not park within 200 feet.

Do not park within 500 feet.

Do not park within 300 feet.

34 / 40

Which of the following is NOT an appropriate reason to flash your braking lights?

to signal to tailgaters that they are too close to your vehicle

to alert drivers behind you that there are hazards ahead

to warn vehicles approaching you from behind that you are driving slowly

to warn drivers behind you when you need to slow down

35 / 40

There must be a hazardous materials identification number on the ______ and on the ______.

package, trailer

shipping papers, package

invoice, shipping papers

trailer, packages

36 / 40

Select the answer that is controlled by the foot brake.

the service air line

the shut off valves

the emergency brake

the engine brake

37 / 40

What might happen if you swing wide to the left before you turn right?

someone might try to pass you on your right

you might damage your leaf springs

all of these answers are correct

someone might try to pass you on your left

38 / 40

What is most likely to occur when driving a tanker truck and the front wheels begin to skid?

The surge will disconnect the tank from the truck.

Nothing will occur.

No matter how you steer, you will continue in a straight line.

The tank will roll over.

39 / 40

Which of the following is NOT an important reason to look far ahead when you are driving?

look for brake lights from slowing vehicles

determine if there are any hills coming up

look for vehicles coming into your lane

determine if there are any upcoming traffic lights that might require you to stop

40 / 40

What is a technical name?

The medical term for hazardous materials used by medical personnel.

The name for a hazardous material most commonly used in the trucking community, accepted as standard.

The name for a hazardous material most commonly used on the street.

The name for a hazardous material used in scientific journals and texts, recognized as its chemical and microbiological name.

Your score is

The average score is 0%

5/5 - (2 votes)

CDL Category Practice Tests

CDL Practice Test

How To Get A maryland Commercial Drivers License

Applicants can apply for any CDL and necessary endorsements when they are 21 years of age or older. Applicants may apply for a restricted CDL at the age of 18 years old. This restricted CDL limits the driver to intrastate driving and doesn’t allow HazMat Certification, driving double or triple trailers, or driving school buses with children on board. All applicants must possess a current DOT medical card to be considered for their CDL.

All drivers that have the following issues are considered disqualified from receiving their Maryland CDL.

Having a current license suspended, revoked, denied, or canceled.
Possessing more than one state driver’s license.
Having restricted CDL driving privileges in another state.
Being convicted of driving impaired within 24 months prior to submitting a CDL application.

All applicants must successfully pass both a skills test and a knowledge test in order to receive their Maryland CDL. To receive specific endorsements, individuals must pass examinations about the endorsement as well.

Endorsements
X – Tank and Hazmat Endorsement
H – Hazardous Materials
N – Tank Vehicles
P – Passenger Vehicles
T – Double / Triple Trailers

Hit the Open Road

maryland CDL License Test Tips

Knowledge tests are required to receive Class A, B, and C CDLs and endorsements. All applicants must take a 50 question test and pass with a score of 40 or higher to receive their CDL permit. Those applying for a Class A license must take a 70 question test, with 20 of the questions pertaining directly to combination vehicles. All endorsements require their own specific examination that has been 20 and 30 questions. All assessments must be passed with a score of 80 or higher.

Each applicant is required to complete a three-section skills assessment. This assessment is comprised of a vehicle inspection, driving test, and basic control test. To pass the skills portion of the CDL assessment, applicants must successfully show their knowledge in all three areas. Those seeking vehicle-specific endorsements must take the skills test in that specific type of vehicle they want the endorsement for.

Additional Information

Information on the Maryland Motor Vehicle Administration

The Maryland Motor Vehicle Administration provides the oversight and administration of CDL requirements in Maryland. To get more information contact them via:

Website: http://www.mva.maryland.gov/drivers/apply/cdl/commercial.htm

Phone: 410.424.3011

Additional Maryland CDL Helpful Links

Please use the links below to access more valuable Maryland CDL testing resources and to learn more about practice driving tests for the state of Maryland.

maryland CDL Practice Test