utah
CDL Practice Test

Welcome to the Utah CDL practice test site. As you prepare to obtain your CDL in Utah, have this site be a guide for practicing common test questions. You can take these practice test questions as many times as you like, and the site is free to use as you prepare to take the Utah CDL test. 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

_____ create a little above 90 degree angle between the adjuster arm and push rod when the brakes are released and no less than 90 degrees when the brakes are applied.

slack adjusters

air lines

brake drums

brake disc

2 / 40

Select the factor that is known to cause brakes to fail or fade. (more than one answer may be correct, but select only one)

when using the engine brake more than the brakes

brakes that are not aligned properly

excessive heat from extensive use

tire retread that is mismatched

3 / 40

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

True

True, but only on downgrades

False

True, but only in ideal conditions

4 / 40

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

75 psi

150 psi

125 psi

100 psi

5 / 40

Two causes of tire fires are ______.

under-inflated tires and poor retreads

hot brakes and under-inflated tires

duals that touch and road debris

under-inflated tires and duals that touch

6 / 40

When inspecting the_____you pump the pedals 3 times and then hold it down for 5 seconds feeling for no movement to occur.

hydraulic brakes

engine brakes

all answers listed

emergency brakes

7 / 40

How do you test the trailer service brakes?

apply the hand control and check to see if you feel the trailer brakes come on

release air to the spring brakes

apply pressure to the brake pedal

test the brakes out while driving at 5 mph

8 / 40

The most stable tanker shape is:

Cylindrical

Square

Round

Elliptical

9 / 40

Select the true statement about tractor protection valve:

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

it provides the air supply to the brake system

it is closed by the parking brakes

all of these answers are correct

10 / 40

A tank trailer should never be fully loaded due to:

The will be more shifting of the load.

The movement is stronger.

The liquid can expand causing a leak from the trailer.

The baffles aren't as effective.

11 / 40

How should the pintle hook be when backing a dolly under the second trailer?

in the unlatched position

in a halfway open position

removed from the dolly

in the latched position

12 / 40

The brake pushrod should not move more than____for manual slack adjusters.

checking is not required in vehicles built after 1994 as they have automatic slack adjusters

1-2 inches while the brakes are set

an inch when pulled by hand with the brakes released

movement is not allowed

13 / 40

For what reason do you keep the starter switch key in your pocket during the pre-trip inspection?

you will need it to inspect the trailer

you will need it to open the side box

so you don't lose it

so no one moves the vehicle while you are inspecting underneath it

14 / 40

What is NOT one of the four skill areas that operating a commercial vehicle requires?

accelerating

safely backing

steering

first aid certification

15 / 40

What is a passive railway crossing?

The type of crossing on which the driver does not have to stop.

The type of crossing, which does not have any type of traffic control device.

The type of crossing where you can pass the tracks without stopping.

The type of crossing with no cross buck sign.

16 / 40

Select the statement that tells you how you can check the low pressure warning signal.

Turn the electrical power on and apply pressure on and off the brake pedal to increase air tank pressure. The low air pressure warning signal must come on before the pressure increases to more than 60 psi in the air tank.

Turn the electrical power on and apply pressure on and off the brake pedal to decrease the air tank pressure. The low air pressure warning signal must come on before the pressure drops to less than 60 psi in the air tank.

Turn the electrical power off and apply pressure on and off the brake pedal to decrease air tank pressure. The low air pressure warning signal must come on before the pressure drops to less than 30 psi in the air tank.

The low pressure warning signal is only testable by the factory.

17 / 40

Alcohol evaporators in some air brake systems help to:

decrease the chances of ice in the air brake valves in cold weather

cleans out oil from the air lines

it removes fuel from the air lines

decreases the risk of water in the air brake valves in cold weather

18 / 40

The locking jaws of the kingpin should close around:

the base

the tip

the apex

the shank

19 / 40

You should adjust all the outside left and right side flat mirrors to see:

The children's exit path out of the main bus door.

The passenger area inside the bus.

The rear right and left tires touching the ground as well as 200 feet behind the bus.

The entire area to the rear of the mirror along the side of the bus.

20 / 40

Suspension systems:

keep the axles in place

keep the steering wheel tight

keep the brake drums from failing

keep the load secure

21 / 40

Where are shut off valves located on trailers that are doubles or triples?

on emergency and service air lines

on service air lines

on parking brake lines

on emergency air lines

22 / 40

What do you do first during step 3 of starting the engine and inspecting the inside of the cab?

Shift the gear to neutral.

Make sure the parking brake is activated after getting in the cab.

Listen for any unsual noises after starting the engine.

Start the engine after getting in the cab.

23 / 40

Select why you should not use the trailer hand valve while driving:

you should only ever use the parking brake

it does not work as well as the foot brake does

there is a possibility it will make the trailer skid

it will cause the tractor to shake

24 / 40

You should check the_____when loading small tanks equipped with bulkheads.

distribution of the weight

expansion rate

percentage of water

fuel to air ratio

25 / 40

Select the first action to do when the low air pressure warning comes on:

shift into a higher gear

release the supply control valve

come to a stop and safely park as soon as possible

adjust the engine brake

26 / 40

When not towing a trailer, why should the tractor glad hands be locked?

the system pressure will not build up

this should never be done

the connected brake circuit will become a back up air tank

it keeps water and dirt out of the lines

27 / 40

You should turn off your engine when loading flammable liquid unless:

The material does not need a placard.

You are loading at night and need the headlights.

You need the engine to run the pump.

You are a non-smoker.

28 / 40

Select whether the following statement is true or false: Front wheel brakes are good to use in all conditions.

false

true

only in bad weather

only in ideal conditions

29 / 40

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

press the seals together at a 90 degree angle

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

cross the air supply lines to test for leaks

clean the couplers before connecting them

30 / 40

Select the true statement in regards to the liquid inside of a bulk tank causing a tank truck to roll sideways.

It can occur even when driving at the posted speed limit.

It can occur even with baffles inside that slow the flow.

It can occur when driving through a curve.

All answers listed.

31 / 40

Which of the following statements is FALSE?

you can almost always turn to miss an obstacle more quickly than you can stop

anti-lock braking systems (ABS) only activate when wheels are about to lock

stopping is not always the safest thing to do in an emergency

if a tire blows, you should put the brakes on hard to stop quickly

32 / 40

Which of the following should you NOT do if you experience a tire failure?

you need to be aware that a tire has failed

engage the brakes hard and immediately

stay off the brake pedal

hold the steering wheel firmly

33 / 40

The minimum tire tread depth for front tires is:

4/32-inch

3/8-inch

1/32-inch

1/2-inch

34 / 40

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

no matter how you turn the steering wheel, the rig will continue in a straight line

there will be a trailer jackknife

nothing will occur

the rig will slide sideways but stay in a straight line

35 / 40

What is the most important reason for doing a school bus inspection?

For safety required by federal, state, and local laws.

To give the mechanic something to do.

To assist the school principal with their report.

To check for flat tires.

36 / 40

If you are driving a 100-foot truck with double trailers at 30 mph in dry conditions, how many seconds of space should there be between your truck and other vehicles?

37 / 40

How can you check slack adjusters?

by frequently checking the pressure gauge

by pulling hard on each slack adjuster

by using a fixed wrench

it is not possible to check manually

38 / 40

You should check____when loading the small tanks of a cargo tank with bulkheads.

none of the answers listed

the expansion rate

the fuel to air ratio

the weight distribution

39 / 40

Select how you would check the truck's slack adjusters.

listen for any strange noises while applying pressure to the brake pedal

while wearing gloves, pull hard on each slack adjuster that you can reach

all of these answers are correct

brake hard after accelerating

40 / 40

For Division 1.1 or 1.2 Explosives A, should the floor liner required be stainless steel?

Yes

Any type of floor liner is sufficient

Never use a floor liner for any explosive class

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CDL Practice Test

How To Get A utah Commercial Drivers License

To be eligible for a CDL in Utah, applicants must meet the following age eligibility requirements.

Be at least 18 years old to operate a commercial vehicle intrastate (within Utah only).
Be at least 21 years old to operate a commercial vehicle interstate (outside of Utah).

Applicants who are under the age of 21 years old will not be permitted to apply for endorsements in HAZMAT, passenger vehicles and school buses.

Utah CDL applicants must be certified that they are medically fit to operate a commercial vehicle and pass a vision test. Applicants are required to submit the following documents.

(Form MCSA-5876) Medical Examiner’s Certificate

(CDL-42) Commercial Driver’s License Medical Self Certification

Drivers who have had their licenses revoked, suspended, denied or canceled are not eligible for a CDL in Utah. Applicants can be disqualified for having multiple licenses.

Utah CDL Endorsements

H – Hazmat Vehicles
N – Tank Vehicles
P – Passenger Vehicles
S – School Bus
T – Double or Triple Trailer
X – Combination Tank Vehicles and Hazmat Vehicles

Hit the Open Road

utah CDL License Test Tips

All Utah CDL applicants must pass the general knowledge test prior to taking the skills test. This test consists of 50 questions. To pass the Utah test, applicants must score 80 percent or higher. Applicants who require additional endorsements must pass additional tests and pay the required fees. The Utah skills test can be taken 14 days after applicants pass the knowledge test. It includes a pre-trip vehicle inspection, basic control skills, and on-road driving. Applicants must pass each section.

Military veterans and current military members can apply to have the skills exam waived if they meet the requirements. To qualify for a waiver, applicants must:

Be currently enlisted in the military.
Have operated a commercial vehicle as part of their military duties for at least 2 years.
Have been discharged from the military within the past 12 months.
Submit (Form CDL-ST WVR) CDL Skills Test Waiver Application for Military Skills Waiver. The commanding officer must sign this document.

Additional Information

Information on the Utah Department of Public Safety

The Utah Department of Public Safety administers CDL license requirements in Utah. To get more information contact them via:

Website: https://dld.utah.gov/licensingid-cards/commercial-driver-license-cdl/

Phone: 801.965.4437

Additional Utah CDL Helpful Links

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

utah CDL Practice Test