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

How do you know when your brakes are fading?

2 / 40

What is the purpose of a baffle?

3 / 40

This should be cleaned and then adjusted properly while inside the cab.

4 / 40

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

5 / 40

On a drawbridge, you do not need to stop, but must slow down and make sure it's safe, when:

6 / 40

Who is responsible for certifying on the bills of lading that the hazardous materials are prepared properly?

7 / 40

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

8 / 40

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

9 / 40

____is what can legally hold the parking brake or emergency brake in position for a bus, truck, or truck tractor.

10 / 40

Select the true statement in regards to if a glad hand on the blue air line is missing a seal.

11 / 40

What are slack adjusters?

12 / 40

A drawbridge does not have a traffic light showing green or a traffic control attendant. How many feet before the draw of a bridge must a bus driver stop?

13 / 40

What is the service air line controlled by?

14 / 40

Signs of distracted drivers include:

15 / 40

Your bus is disabled. With riders aboard, the bus may be towed or pushed to a safe place only:

16 / 40

What might happen if you swing wide to the left before you turn right?

17 / 40

You should be in the proper gear before going down a hill because:

18 / 40

Is it mandatory that all vehicles with air brakes have low air pressure warning signals?

19 / 40

If you work for an interstate carrier:

20 / 40

Select the load of the trailer that will require the shorter distance to stop.

21 / 40

All standing riders must stay:

22 / 40

Why should you know the outage?

23 / 40

Which of the following is a recommended procedure when unloading the students?

24 / 40

Select what you should do before leaving the vehicle unattended:

25 / 40

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

26 / 40

Suspension systems:

27 / 40

How do you hook a combination to a second trailer without spring brakes and without using wheel chocks?

28 / 40

What type fire extinguisher is required in the power unit of a placarded vehicle?

29 / 40

Select when you should use the parking brake:

30 / 40

To inspect the______you should pump the pedal 3 times and hold it down for 5 seconds while making sure the pedal doesn't move during those 5 seconds.

31 / 40

This gauge has a governor cut-off.

32 / 40

What will happen right away should the service air line come apart but the emergency line is intact while driving a combination vehicle?

33 / 40

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

34 / 40

Never refuel your bus:

35 / 40

If the hazardous materials are classified as FORBIDDEN you should:

36 / 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?

37 / 40

Before transporting a sealed load, you must check:

38 / 40

You should brake on a long steep downgrade hill as a supplement to the braking effects of the engine

39 / 40

You should be extra cautious when___while driving a smooth bore tanker combination.

40 / 40

The cause of almost half of all truck driver deaths are:

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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.