colorado
CDL Practice Test

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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

Select which is not a mandatory emergency equipment:

2 / 40

A commercial motor vehicle (CMV) is defined as:

3 / 40

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

4 / 40

What is the movement of the liquid called when the tanks are partially filled?

5 / 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.

6 / 40

Suspension systems:

7 / 40

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

8 / 40

Air brake systems should not lose air faster than____when testing for air leakage rates in combination vehicles before applying the brake pedal.

9 / 40

Select the reason as to why you should not use the trailer hand valve while driving.

10 / 40

What is the minimum amount of distance you should maintain when driving at 50 mph in ideal conditions with a 100 ft twin trailer combination?

11 / 40

Suspension systems:

12 / 40

Should the air pressure in the service air tanks fall below____the driver must be alerted via warning mechanism in the truck cab.

13 / 40

Before transporting a sealed load, you must check:

14 / 40

What placards, if any, do you need if your load includes 20 pounds of Division 2.3 gas and 1,001 pounds of flammable gas?

15 / 40

Where are the two main places where the hazardous material identification number appears?

16 / 40

Buses may NOT have recapped or regrooved tires:

17 / 40

Start by___when coupling.

18 / 40

Select the correct setup for shut-off valves:

19 / 40

Do not tow or push a disabled bus with riders aboard the vehicle, unless:

20 / 40

Select the statement that best explains the "crack-the-whip" effect.

21 / 40

What should you do if you start a trailer skid?

22 / 40

Before backing under the trailer after connecting the air lines you should:

23 / 40

Select the true statement about convex ("spot") mirrors.

24 / 40

Most states require school bus drivers to take a physical examination:

25 / 40

Do converter dollies have spring brakes?

26 / 40

When inspecting your bus, you must make sure that:

27 / 40

Select the true statement in regards to when a bulk tank vehicle stops at an intersection on a slippery surface:

28 / 40

What method should be used to test that the air is flowing to all the trailers?

29 / 40

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

30 / 40

How do you check the coolant level?

31 / 40

Select the factors that can cause your brakes to fade or fail:

32 / 40

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

33 / 40

What position should the heaviest trailer be in when pulling 3 trailers?

34 / 40

The most important hand signal you should agree on with a helper is:

35 / 40

Which of the following is a necessary qualification for non-bulk packaging?

36 / 40

What action should you take if there is no phone available and you discover your hazardous materials shipment leaking at a rest stop?

37 / 40

Overhead inside mirror is used to:

38 / 40

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

39 / 40

What does the amount of liquid allowed in the tank depend on?

40 / 40

Select the false statement about tractor protection valves.

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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.