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

Forward and back surge is powerful in this type of tanker.

2 / 40

Before pulling away, make sure the landing gear of the trailer is:

3 / 40

Which of the following materials would be an acceptable floor liner for moving Division 1.1 or 1.2 materials?

4 / 40

What is the brake system that applies and releases the brakes when the brake pedal is used?

5 / 40

If you are already carrying 100 pounds of silver cyanide, what precautions must you take if you are given papers at a dock to carry 100 cartons of battery acid?

6 / 40

What are you checking when looking at the lubrication level on a dipstick?

7 / 40

What do you need to do to supply air to the air tanks of the second trailer?

8 / 40

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

9 / 40

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

10 / 40

If you are hauling hazardous materials and have ___ tires on your vehicle, you must stop and check them every time you park.

11 / 40

Why is the proper adjustment and use of all mirrors so vital to the safe operation of the school bus?

12 / 40

When transporting both hazardous and non hazardous materials, your bills must:

13 / 40

Why should you use chocks when parking a trailer without spring brakes?

14 / 40

Which of the following is a clue another driver is impaired:

15 / 40

When there is a hazardous materials emergency. You should:

16 / 40

How should the hand valve be used?

17 / 40

While completing the 2nd component of the air brake check you are required to turn the electrical power on, begin fanning off the air pressure by rapidly relasing and apply the foot brake and _____.

18 / 40

What can side to side surge cause?

19 / 40

The safety valve is usually set to open at:

20 / 40

Select when you should use the parking brake:

21 / 40

Charter drivers should not:

22 / 40

Is it important to look into the back of the fifth wheel to see if the lockpin is locked in?

23 / 40

The crack-the-whip effect is more likely to cause the front trailer to tip over.

24 / 40

Buses may carry small-arms ammunition labeled ORM-D, emergency hospital supplies, and drugs. However, buses must never carry:

25 / 40

Select the true statement in regards to your brake function when your ABS fails

26 / 40

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

27 / 40

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

28 / 40

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

29 / 40

When should you avoid using the parking brake?

30 / 40

How many seats may be placed in the aisle if the bus is a charter and is carrying agricultural (farm) workers?

31 / 40

The gauge that indicates normal or increasing lubrication pressure to prevent engine seizure, failure or breakdown is:

32 / 40

Water is drained from the compressed air tanks because:

33 / 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.

34 / 40

When approaching railroad tracks, stop your bus:

35 / 40

You are required to have a tank endorsement when transporting:

36 / 40

Some hazardous materials may not be loaded together with other hazardous materials. The prohibited combinations are listed in the:

37 / 40

School buses are one of the safest means of transportation. What two key factors contribute to this impressive safety record?

38 / 40

If you are required to stop at railroad crossings, you must:

39 / 40

To avoid rollover when going through a curve, the best thing to do is:

40 / 40

The most stable tanker shape is:

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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.