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

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

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

the length and weight of the vehicle

maintaining properly inflated tires and an even load on the trailer

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

2 / 40

The object that doesn't get checked at the side of the trailer is the:

The locking pins/tandem release arm

The frame

Electrical/air connections

The landing gear

3 / 40

The amount of liquid you can carry depends on:

The density or weight of the liquid.

All answers listed.

How much the liquid will expand during the trip.

How much you can legally carry.

4 / 40

To decide which placards you need, if any, what three things do you need to know?

Materials hazard class, location being shipped, and amount of all hazardous materials on your vehicle.

Materials hazard class, amount being shipped, and amount of all hazardous materials of all classes on your vehicle.

Materials hazard class, percentage of total volume, and amount of all hazardous materials on your vehicle.

Packing group numbers, amount being shipped, and amount of all hazardous materials of all classes on your vehicle.

5 / 40

How do you make sure the trailer height is correct before coupling?

visually check that the rear trailer is lower than the fifth wheel so that the trailer raises slightly when the dolly is pushed under it

visually check that the lead trailer is higher than the fifth wheel so that the trailer will lower when the dolly is pushed under it

visually check that they are level height wise

you do not need to do a visual check

6 / 40

Which of the following are possible causes of tire fires?

improperly loaded cargo and dual tires that touch

poor cargo ventilation or short circuits

loose fuel connections or under-inflated tires

dual tires that touch and under-inflated tires

7 / 40

Of the following hazardous material classes, which is the most dangerous?

Division 62

Division 63

Division 61

Division 64

8 / 40

The best way to go into a curve is to decrease your speed going into the curve and then ____going through it.

shift down 2 gears

ride the brake

slightly accelerate

none of the answers listed

9 / 40

Select the true statement in regards to unhooking the pintle hook while the converter dolly is still under the trailer.

this is recommended as it is standard procedure

this is not recommended because it may result in injury

this is not recommended as it could could cause damage to the pintle hook

this is recommended because it keeps the trailer from tipping over

10 / 40

The baffles in a tank trailer help to control:

The flow of liquid side to side.

The distrubition of weight.

The overall weight of the vehicle.

The movement of liquid from front to back.

11 / 40

Off-tracking happens when going around a corner and:

the rear part of the trailer goes into the shoulder

the rear wheels follow the front wheels in a straight path

the front part of the trailer pulls to the right

the rear wheels follow a different pathway than that of the front wheels

12 / 40

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

hydraulic fluid reservoir

main spring

tie rod

steering knuckle

13 / 40

How often should you check the tires if your placarded trailer has dual tires?

Check tires every hour or 75 miles.

Check tires every 4 hours or 200 miles.

Check tires every 3 hours or 150 miles.

Check tires every 2 hours or 100 miles.

14 / 40

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

Class 4 only

Classes 1, 2, 3, and 4

Class 1 only

Class 2 only

15 / 40

What should you do if you start a trailer skid?

slowly apply a firm pressure to the brakes

release the brakes to get traction back

quickly step on the brakes

use your trailer hand brake

16 / 40

The crack-the-whip effect is more likely to cause the front trailer to tip over.

trailers never tip

false

true

there is an equal chance for trailers to tip

17 / 40

Which of the following is NOT something you need to know in order to determine if you need to use placards?

The substance or material's hazard class.

The manufacturing date for the materials.

The amount of a substance or material being shipped.

The amount of all hazardous materials of all classes in your vehicle.

18 / 40

What are spring brakes?

they do not function when the psi falls below 30 psi

they are brakes that automatically come on for a truck or trailer when the psi drops too low

they are powerful springs that hold back air pressure when driving

all of these answers are correct

19 / 40

In the event of an accident you should remember to do the following EXCEPT:

move the victims out of the way immediately

protect the area

notify authorities

stop any bleeding and keep the victims warm

20 / 40

How often should air tanks be drained?

every 4-5 days

every 6 hours

once a day

every 7 days

21 / 40

With Division 1.2 or 1.3 Explosive B, how close to the travelled part of the roadway can you park?

Minimum of 2 feet

Minimum of 5 feet

Minimum of 10 feet

Minimum of 15 feet

22 / 40

What is the first thing to do if your vehicle catches fire while driving?

open the door and jump out of the vehicle

pull off the road and park in an open area

find a service station to pull into

open the hood and let the flames die down

23 / 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.

battery fluid level

coolant level

washer fluid level

oil level

24 / 40

What is the correct number of red reflective triangles that you should carry?

seven

five

one

three

25 / 40

Select the part that is not a part of the drum brake:

safety valve

brake drum

slack adjuster

axle

26 / 40

How do you check the power steering fluid?

Via the power steering fluid dipstick.

Via indicator light on the dashboard.

Undo the oil fill cap and check the level.

By looking through the reservoir sight glass.

27 / 40

Liquid surge affects the handling of a tanker by:

Moving the truck in the direction of liquid flow.

Decreasing the wind drag.

Allowing you to stop faster.

Allowing you to take tighter turns.

28 / 40

Select which is not an engine compartement belt:

A water pump belt

A power steering belt

A safety belt

An air compressor belt

29 / 40

How should you know when to shift?

road speed and wind speed

engine speed and road speed

engine speed and the shift indicator light

every 3 to 5 seconds or engine speed

30 / 40

Which trailer is most likely to turn over when you make a sudden turn while pulling doubles?

trailers will never turn over

there is an even chance for either trailer

the rear trailer is twice as likely

the front trailer is twice as likely

31 / 40

Another term for a smooth bore tank is:

A tank that is easily portable.

A tank that is made out of stainless steel.

A liquid tank that does not have baffles.

A liquid tank that has baffles.

32 / 40

Select the true statement about baffled tankers:

It has hollow balls in it to slow the motion of the liquid in the trailer.

None of the answers listed.

It has separate tanks.

It has walls with holes inside for liquid to flow through.

33 / 40

Within 3 minutes, this gauge pressure should build to 90 psi from 50 psi.

Oil pressure gauge

Coolant pressure gauge

Air pressure gauge

Voltmeter gauge

34 / 40

Select what you should not do when coupling the glad hands.

clean the couplers before connecting them

cross the air supply lines to test for leaks

make sure to match the colors or check the tags before connecting

press the seals together at a 90 degree angle

35 / 40

Remember to_____when steering to avoid a crash while driving doubles.

be prepared to counter-steer

keep your foot off the brake while turning

all answers listed

have both hands on the steering wheel

36 / 40

The act of operating a motor vehicle in a selfish, bold, or pushy manner, without regard for the rights or safety of others is known as.

aggressive driving

road rage

distracted driving

defensive driving

37 / 40

How high should you crank the landing gear?

as high up as it will go

until the crank handle is loose

so that you can clear railroad tracks

for it to be 6 inches above the ground

38 / 40

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

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

lift the brake pedal up

activate the parking brakes

release the tractor brakes

39 / 40

A tractor should not be backed under a trailer until the whole air system is:

is between 50 and 80 psi

is between 40 and 60 psi

is at half of the maximum pressure

at a normal pressure

40 / 40

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

Because of the movement of the liquid.

Because of the extreme weight.

Because of uneven expansion.

Because of strong winds.

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