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

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

2 / 40

The blind spot behind the bus could extend to how many feet?

3 / 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?

4 / 40

The container for the mechanism that transforms the steering column action into wheel action is:

5 / 40

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

6 / 40

A tank trailer should never be fully loaded due to:

7 / 40

Which trailer is more likely to roll over when pulling 3 trailers?

8 / 40

Select the true statement in regards to the liquid inside of a bulk tank causing a tank truck to roll sideways.

9 / 40

It has just reached freezing. Which of the following areas is slippery?

10 / 40

When driving with multiple trailers, which one should be right behind the tractor?

11 / 40

To transport cargo safely, which of these are you NOT responsible for?

12 / 40

The main reason you should pull the dolly out from under a trailer before disconnecting it from the trailer in front is:

13 / 40

Which of the following is a key steering component?

14 / 40

You should check____when loading the small tanks of a cargo tank with bulkheads.

15 / 40

In the event of an accident you should remember to do the following EXCEPT:

16 / 40

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

17 / 40

An example of a low pressure warning signal for air brakes is:

18 / 40

A truck with baffles will handle:

19 / 40

Rods, connecting links, and arms from the steering box to the wheel are a part of the:

20 / 40

What is most likely to occur when driving a tanker truck and the front wheels begin to skid?

21 / 40

If you are transporting cargo, you should inspect the cargo and securing devices:

22 / 40

What are the three types of emergency equipment that you must have with your vehicle?

23 / 40

What is a supply pressure gauge used for?

24 / 40

What are slack adjusters?

25 / 40

Select the factor that is known to cause brakes to fail or fade. (more than one answer may be correct, but select only one)

26 / 40

A bus has a GVWR of 22,000 pounds and seats 24 passengers. What CDL class is this vehicle?

27 / 40

What gauge on the dashboard indicates electrical system charging rate?

28 / 40

Which trailer is most likely to tip over due to the crack the whip effect?

29 / 40

This item should not be rusted, bent, or damaged and centered over evenly spaced tires and dual wheels.

30 / 40

What does it mean when the safety valve releases air?

31 / 40

Select the action that is not recommended when driving on slippery roads:

32 / 40

In the event of an accident you should remember to do the following EXCEPT:

33 / 40

In the event of a tire failure you should...

34 / 40

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

35 / 40

What is incorrect concerning disruptive passengers?

36 / 40

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

37 / 40

The parking brakes should be used____in air brake vehicles.

38 / 40

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

39 / 40

What color are all school buses painted?

40 / 40

Select the two things that are important in preventing a rollover:

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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.