colorado
CDL Practice Test

Welcome to the Colorado CDL practice test site. Topics covered in these practice tests are designed to prepare you for the Colorado Department of Motor Vehicles CDL test. These tests are free and you are able to take tests as many times as you would like as you prepare to obtain your Colorado CDL. 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

What are shippers trying to accomplish when they package the material?

Make it easy to open and close.

Make it easy to identify.

Make it as light as possible.

All of these answers are correct.

2 / 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.

road rage

aggressive driving

defensive driving

distracted driving

3 / 40

Shifting into a lower gear and removing your foot off of the accelerator to slow your vehicle is known as?

brake fade

double clutching

anti-lock braking

engine braking

4 / 40

You may use DANGEROUS placards instead of separate placards for each Table 2 hazard class when:

You have 1,001 pounds or more of two or more table 2 hazard classes, requiring different placards.

Both of these conditions must be met.

You have not loaded 2,205 pounds or more of any table 2 hazard class material at any one place (you must use the specific placard for this material).

The correct answer is not listed.

5 / 40

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

this is recommended because it keeps the trailer from tipping over

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

6 / 40

It is important to know the outage required for the liquids you carry because:

Some of the denser liquids don't need any.

None of these answers are correct.

Some liquids will expand more than others when warm.

Tank baffles may not always be permitted with outage.

7 / 40

After the initial drop, the maximum leakage rates per minute is:

3 psi for combination vehicle and 1 psi for single vehicle

4 psi for a combination vehicle and 3 psi for a single vehicle

6 psi for a combination vehicle and 5 psi for single vehicle

10 psi for combination vehicle and 5 psi for single vehicle

8 / 40

What does the amount of liquid you can carry depend on?

The center of gravity.

The material the baffles are made from.

The outage of the liquid.

The vehicle's horsepower rating.

9 / 40

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

have the trailer brakes off

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

all answers listed

press down on the brake pedal twice

10 / 40

Select the statement of what you should not do if you are required to drive through flowing water or deep puddles.

increase engine rpm

drive at a high speed

shift into a lower gear

quickly turn the steering wheel side to side

11 / 40

Select how you can tell if your vehicle is equipped with an anti-lock braking system:

the vehicle is manufactured after 1998

the vehicle is manufactured after 1990

the vehicle is manufactured after 2001

the vehicle is manufactured after 2005

12 / 40

When would a drive-wheel skid result in a jackknife when pulling doubles?

when the tractor spins around

when the trailer slides to the right into the shoulder

when the tractor brakes lock up

when the trailer pushes the towed vehicle sideways

13 / 40

What school bus accidents should be reported?

No accidents.

All accidents.

Only accidents casusing injury.

Only accidents determined to be the fault of the bus driver.

14 / 40

Cargo tanks ____.

are large drums temporarily attached to a vehicle

are large drums used to contain hazmat that is loaded on a trailer

are bulk packagings permanently attached to a vehicle

are tanks that the military uses to transport hazardous materials

15 / 40

Which of the following factors is NOT used to determine your safe speed when going down a long steep downgrade?

length and steepness of grade

weather

total weight of the vehicle and cargo

time of day

16 / 40

The correct trailer height when coupling the rear trailer is:

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

the kingpin is touching the fifth wheel

when the locking jaws are open around the kingpin

slightly lower than the center of the fifth wheel

17 / 40

How do you check the coolant level?

While wearing rubber gloves and safety glasses.

None of the answers listed.

Inspect the reservoir sight glass or remove the radiator cap if the engine isn't hot.

Remove the radiator cap once it is at operating temperature.

18 / 40

You should line up_____when getting ready to back under the trailer.

directly in front of the trailer

above 12 degrees to the right of the trailer

for the kingpin to activate on the driver's side first

about 12 degrees to the left of the trailer

19 / 40

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

Check tires every 3 hours or 150 miles.

Check tires every 4 hours or 200 miles.

Check tires every 2 hours or 100 miles.

Check tires every hour or 75 miles.

20 / 40

When backing your vehicle, which of the following is NOT recommended

back and turn towards the driver's side

use the lowest reverse gear

back towards the right side

back as slow as possible

21 / 40

If the hazardous materials are classified as FORBIDDEN you should:

Refuse the load.

Place the materials in the front of the trailer.

Take special caution in transporting the material.

Remove the placards from the trailer.

22 / 40

Some school busses are marked with the LNG placard. What does LNG stand for?

Lifted neutral graftring.

Low-range pneumatic gearbox.

Liquified natural gas.

None of these answers are correct.

23 / 40

If students must cross the street, when they get off the bus, which statement is true?

The student should wait to cross the street until the bus continues on its route.

If the bus is equipped with the crossing gate, the danger of running over the child is eliminated.

When the driver signals that it is safe to proceed, the students must run across the street to reduce the exposure to danger.

For crossing, students should make eye contact with the bus driver and wait for the driver's signal that it is safe to proceed.

24 / 40

When this item is missing or loose, movement may occur between the fifth wheel assembly and the frame.

Locking jaw

Tandem release arm

Lug nuts

Locking pins

25 / 40

Select the true statement in regards to driving a truck with triple or double trailers:

extra care should be taken when driving in bad weather and in the mountains

all answers listed

the truck requires increased following distance compared to smaller vehicles

the risk of trailer jackknifes and tipping is increased compared to shorter trucks

26 / 40

How do you check the air compressor governor "cut in" and "cut out" pressures?

run the engine at a fast idle

monitor the air pressure gauge

decrease the tank pressure by stepping on and off the brake

all of these answers are correct

27 / 40

Do you need to stop before a railroad crossing if you are hauling 100 pounds of Division 4.3 materials?

Yes

Only if the arm is down telling vehicles to stop

Impossible to tell without more information

28 / 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

test the brakes out while driving at 5 mph

apply pressure to the brake pedal

release air to the spring brakes

29 / 40

Tires should should be replaced:

when the tread separates

all of these answers are correct

if the tread depth on your front tires is less than 4/32 deep

when there are broken valve stems

30 / 40

Select when you should use the hand valve to park a combination vehicle.

when parking in a commercial lot

when parking at a loading dock

never

when parking on a downgrade

31 / 40

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

hold the steering wheel firmly

you need to be aware that a tire has failed

stay off the brake pedal

engage the brakes hard and immediately

32 / 40

You should look into the back of the fifth wheel on a dolly to see if it is locked onto the kingpin.

only in a level loading dock

false

true

only at the end of a shift

33 / 40

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

brake hard after accelerating

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

all of these answers are correct

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

34 / 40

It is good practice to_____when uncoupling.

have the glad hands coupled together

make sure the electrical cable is hanging with the plug end down

all answers are appropriate

have the glad hands coupled to the dummy couplers

35 / 40

What should you hook up before backing a tractor to a trailer for coupling?

the electrical service line

there is nothing to be hooked up

the service and emergency air lines

the safety bar

36 / 40

Surge affects the handling of a tanker by:

Allowing you to take tighter turns.

None of the answers listed.

Moving the truck in the direction the liquid flows in.

Increasing the wind drag.

37 / 40

A safe haven is ______.

an approved place for parking unattended vehicles loaded with radioactive materials

an approved place for parking attended vehicles loaded with flammable materials

an approved place for parking unattended vehicles loaded with explosive materials

an approved place for parking unattended vehicles loaded with corrosive materials

38 / 40

Select the true statement about slack adjusters:

they can be adjusted automatically or manually

they should move a minimum of 2 inches from the push rod attachment

they should only be adjusted by a mechanic that is certified in slack adjusters

they do not ever need to be adjusted

39 / 40

Water is drained from the compressed air tanks because:

to keep the oil in the air compressor clean

braking power is decreased due to the low boiling point of water

the water will over cool the compressor

the water could freeze in cold weather and cause braking failure

40 / 40

The belt that you need to make sure is securely mounted, without frays, and adjusts and latches properly is the:

The air compressor belt

The water pump belt

The seat/safety belt

The power steering belt

Your score is

The average score is 0%

5/5 - (1 vote)

CDL Category Practice Tests

CDL Practice Test

How To Get A colorado Commercial Drivers License

Colorado residents the age of 18 or older can apply for their commercial driver’s license. Those between the ages of 18 and 21 are restricted to intrastate driving. Individuals must be 21 years or older to receive their Hazmat, School Bus, or Doubles/Triples Endorsements. All applicants must possess a DOT medical card issued by a FMCSA certified medical examiner in order to be eligible for their CDL.

Any applicants that fall under the following conditions are automatically disqualified from receiving a CDL.

Having more than one driver’s license.
Being disqualified for commercial driving privileges in another state.
Being convicted in the past two years of driving a commercial vehicle impaired.
Having a suspended, canceled, denied, or revoked driver’s license.

All Colorado residents who are seeking to get their commercial driver’s license must pass both one or more knowledge tests as well as a practical skills test.

Endorsements
T – Double And Triple Trailers
N – Tanker Vehicles
P – Passenger
S – School Bus
H – Hazardous Materials
X – Tanker With Hazmat

Hit the Open Road

colorado CDL License Test Tips

All applicants are required to take one or more knowledge tests to display their comprehension of the commercial driving law. Class A, B, and C applicants must complete a 50 question assessment. Class A applicants are responsible for completing an additional 20 questions all based on the subject of combination driving. Applicants seeking endorsements will be required to complete a knowledge test specific to the endorsement sought. The endorsement tests range between 20 and 30 questions. All applicants must receive a score of 80 percent or higher to pass a knowledge test.Applicants for a Colorado CDL must complete a skills test is order to receive their CDL. The skills assessment is comprised of an on-road test, vehicle inspection, and basic controls skills test. Applicants who are applying for endorsements are required to complete the skills test with the type of vehicle the endorsement is intended for.

Additional Information

Information on the Colorado Division of Motor Vehicles

The State of Colorado Department of Revenue Division of Motor Vehicles regulates the CDL requirements and testing in Colorado. To get more information contact them via:

Website: https://www.colorado.gov/pacific/dmv/im-commercial-driver

Phone: 303.205.5600

Additional Colorado CDL Helpful Links

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

colorado CDL Practice Test

CDL Category Practice Tests

CDL Practice Test

How To Get A colorado Commercial Drivers License

Hit the Open Road

colorado CDL License Test Tips

Additional Information

Information on the Colorado Division of Motor Vehicles

Additional Colorado CDL Helpful Links

colorado
CDL Practice Test