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

There must not be more than_____for engine compartment belts.

1/4 inch of play at the ends of the belt

1/2 inch of play at the center of the belt

3/4 inch of play at the center of the belt

1/2 inch of play at the end of the belts

2 / 40

How do you check the power steering fluid?

Via indicator light on the dashboard.

Undo the oil fill cap and check the level.

Via the power steering fluid dipstick.

By looking through the reservoir sight glass.

3 / 40

Where is compressed air stored?

in the hose lines

in the compartment for the engine

in the gasoline tank

in the storage tank

4 / 40

When accelerating:

speed up smoothly and gradually and avoid jerking

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

always use the parking brake to slow down

"hammer down" when your wheels start to spin

5 / 40

When checking for_____you are looking for dripping fluids or puddles on the ground below the transmission or engine.

power steering fluid

coolant level

air brake system

leaks

6 / 40

This object releases the fifth wheel locking jaw to allow uncoupling.

The locking pins

The arm bar

The release arm

The apron

7 / 40

Select the statement that is true in regards to managing space to the sides.

all answers listed

you should always keep your vehicle to the right side of the lane

high gust winds do not cause any issues for triples and doubles

you should try to avoid driving next to others when possible

8 / 40

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

have the trailer brakes off

all answers listed

press down on the brake pedal twice

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

9 / 40

You should_____to uncouple the converter dolly.

chock the wheels, disconnect the safety chains, and then lower the landing gear

lower the landing gear, disconnect the safety chain, and chock the wheels

chock the wheels, lower the landing gear, and disconnect the safey chains

disconnect the safey chains, lower the landing gear, and chock the wheels

10 / 40

____is the most common type of foundation brakes used by heavy vehicles.

S-Cam drum

None of the answers listed

Wedge drum

Rectangle brakes

11 / 40

Always try to back toward the driver's side because

it's more comfortable for turning your neck

your truck will naturally pull toward the driver's side

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

all of these answers are correct

12 / 40

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

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

all of these answers are correct

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

13 / 40

What should you do if the low air pressure warning comes on for only one system in a truck or bus that has a dual air brake system?

stop and safely park your vehicle only continue once the issue has been resolved

decrease your speed and test the other system

decrease your speed and head to the closest mechanic

continue on with your trip

14 / 40

The parking brakes should be used____in air brake vehicles.

as rarely as possible

only when parked on an incline

every time the vehicle is parked

only during post trip inspection

15 / 40

With most hazardous materials, you may park within 5 feet of the road briefly, if your work requires it. The materials that are the exception and do not allow parking this close to the road are:

Corrosives and oxidizers

Acids and poisons

Explosives A and B

Liquids

16 / 40

To transport cargo safely, which of these are you NOT responsible for?

making sure that cargo is properly secured

inspecting the cargo

ensuring the freshness of sealed cargo

recognizing possible overloads

17 / 40

The air leakage rate for a combination vehicle should not exceed ____psi a minute.

18 / 40

The emergency air line is _____and the service air line is____.

red, green

red, blue

white, blue

yellow, white

19 / 40

Cargo tanks are:

Only made in one size.

Bulk packaging temporarily attached to your vehicle.

Bulk packaging permanently attached to your vehicle.

Filled while they are off your vehicle, then attached for transportation.

20 / 40

Which of these statements about speed management and braking is true?

The total stopping distance of a bus is the distance it takes to stop once the brakes are applied.

You need about four times as much stopping distance at 40 mph as at 20 mph.

Stopping time increases by one second for each 10 mph over 20 mph.

The posted speed limit will always allow you to stop safely.

21 / 40

Which seats must have a seat belt:

All of these answers are correct.

The driver's seat.

Women and children seats.

Senior citizen seats.

22 / 40

What is a supply pressure gauge used for?

it tells you how much slack is in the slack adjusters

it tells you how much pressure is in the air tanks

it tells you how much pressure is in the air lines

all of these answers are correct

23 / 40

What is the earliest way to notice a trailer skid?

you can feel a jerk in the back of the tractor

you can see it in your mirrors

you can hear the tires squealing

you can feel it pulling your steering wheel

24 / 40

Charter drivers should not:

Explain rules at the start of the trip.

Mention rules at the start of the trip.

Allow riders on the bus until departure time.

Remind riders about rules once trip begins.

25 / 40

When would you lock some emergency roof hatches in a partly open position?

Whenever you enter a tunnel

For fresh air

First day of spring

Never

26 / 40

Select the true statement about double or triple trailers.

they present a rearward amplification hazard

they can roll over due to abrupt steering movements

they can have a dangerous "crack the whip" effect

all answers listed

27 / 40

What does the service brake system do?

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

they are only on vehicles that have hydraulic brakes

they are part of an official vehicle inspection

they are valves that maintain air tank pressure

28 / 40

Which of the following is not a prohibited practice on the bus:

Towing a disabled bus with riders aboard when getting off would be a safe option.

Talking with riders while driving.

Refueling in a closed building with riders on board.

Fueling your bus with riders on board if about to run out of fuel.

29 / 40

If there is rust around the nuts, what may it indicate?

There is a leak somewhere.

They are fitted just right.

They are loose.

They need to be changed out.

30 / 40

When inspecting the ______you are making sure that the lines and hoses are not chafed, cut, pinched, or dragged against tractor parts.

air brake lines

mud flaps

electric/air lines

lifts/door/ties

31 / 40

What can side to side surge cause?

A spontaneous combustion.

An engine system failure.

An increase in speed.

A roll over.

32 / 40

How do you make sure the air lines are not crossed and the trailer brakes are working after supplying air to the trailer?

release the tractor brakes

listen for brake sounds as you apply pressure off and on the trailer brakes

lift the brake pedal up

activate the parking brakes

33 / 40

Forward and back surge is powerful in this type of tanker.

Bulktruck

Hard stroke

Waffle

Smooth bore

34 / 40

Make sure____when the front trailer supports are up and the trailer is sitting on the tractor.

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

both of the answers listed

neither of the answers listed

there is enough space for clearance between the nose of the trailer and the tops of the tractor tires

35 / 40

What are some things you should check on the front of your vehicle when doing the walk-around inspection?

oil, transmission, air compressor, radiator

windshield, wipers, mirrors, hood latches

tires, steering parts, suspension parts, headlights

low beams, high beams, four way flashers, turn signals

36 / 40

Wet brakes can cause _____.

pulling to one side or the other

all of these answers are correct

lack of braking power

brakes to apply unevenly

37 / 40

Select the true statement about empty trucks:

They have better traction on wet roads than full tanks.

All answers listed.

They can take longer to stop than a truck with a full tank.

They come to a stop faster when you use only the emergency brake.

38 / 40

This component should be checked that it is solid, securely bolted to the tracture frame, and clear of objects.

The catwalk

The platform

The fifth wheel

The locking kingpin

39 / 40

You should_____to make an emergency stop with air brakes when using the stab braking method.

rapidly and lightly pump the brake pedal

apply a full hand valve until you stop and press firmly on the brake pedal

apply a firm pressure to the brakes, release the brake pedal once the wheels lock and then apply pressure to the brakes onces the wheels start rolling again

apply pressure to the brake pedal until the wheels lock and then stay off of the pedal for as long as the wheels are locked

40 / 40

Which of the following statements about downshifting is NOT true?

downshift before climbing a hill

downshift when you get to the bottom of a hill

downshift before starting down a hill

downshift before entering a curve

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

CDL Category Practice Tests

CDL Practice Test

How To Get A maryland Commercial Drivers License

Hit the Open Road

maryland CDL License Test Tips

Additional Information

Information on the Maryland Motor Vehicle Administration

Additional Maryland CDL Helpful Links

maryland
CDL Practice Test