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

2 / 40

The bus driver must accept responsibility for supervising and controlling students while on the bus route. Who is the person in charge?

3 / 40

The best way to test the low air pressure warning signal is to:

4 / 40

For any flatbed load you must have at least ____ tie downs.

5 / 40

The best way to have control on curves is:

6 / 40

Select the true statement about tractor protection valve:

7 / 40

Select the vehicle that off-tracks the most.

8 / 40

This carries hydraulic fluid or air to the wheel brake assemby.

9 / 40

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

10 / 40

If you park the trailer at an angle to the tractor when uncoupling:

11 / 40

What are the liquid tight separations between compartments inside tanks called?

12 / 40

Which of the following types of cargo must never be carried on a bus with passengers?

13 / 40

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

14 / 40

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

15 / 40

The compressor is connected to the engine via _____?

16 / 40

Select the reason as to why air tanks need to be drained:

17 / 40

Remember to____when connecting the converter dolly to the rear trailer.

18 / 40

A shipment described on the Hazardous Waste Manifest may only be delivered to another _______ carrier or treatment facility, who then signs the ______, giving you a copy which you must keep.

19 / 40

By law, the warning lights must only be used when approaching a:

20 / 40

A trailer is at the right height to have the tractor backed up to it when:

21 / 40

If your bus is equipped with an emergency exit door, it must:

22 / 40

The CDL manual indicates the last step on picking up students at the bus stop is as follows:

23 / 40

Remember to_____when steering to avoid a crash while driving doubles.

24 / 40

At the end of each shift you should:

25 / 40

Why is it dangerous to unlock the pintle hook with the dolly still under the rear trailer?

26 / 40

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

27 / 40

Select the true statement about seeing ahead.

28 / 40

In what position should the shut off valves on a the rear of the front trailer be in on a set of double trailers?

29 / 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.

30 / 40

You should have the fifth wheel plate greased as recommened because:

31 / 40

When transporting explosives you may not park:

32 / 40

Your bus starts to lean toward the outside on a banked curve, you are:

33 / 40

Select the step that comes first:

34 / 40

The pintle hook should be_____ and the converter dolly air tank drain valve is___when doing a walk around inspection of a triple or double trailer.

35 / 40

While completing the 3rd component of the air brake check of a combination vehicle, at what psi should the tracor protection valve and parking brake valve should pop out?

36 / 40

How do you test your service brakes?

37 / 40

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

38 / 40

The manual says you should look _____ ahead while driving.

39 / 40

Which of the following should you do when driving the school bus in high wind?

40 / 40

Remember to_____to prevent rollovers.

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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.