CDL Practice Test


Welcome to our CDL practice test site as you attempt to obtain your CDL in Washington. Our practice questions are designed to be similar to questions you would encounter on the CDL Knowledge Test. You can take these practice test questions as many times as you like, and the site is free to use as you prepare to take the CDL test in Washington. 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

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

2 / 40

Select what you should do before leaving the vehicle unattended:

3 / 40

How do you know when your brakes are fading?

4 / 40

The front trailer supports should be____before driving away.

5 / 40

These tires should have a minimum tread depth of 4/32 inches.

6 / 40

Select the true statement in regards to the braking power of spring brakes.

7 / 40

When conducting a pre-trip inspection, the most important item to verify is _____.

8 / 40

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

9 / 40

If there is rust around the nuts, what may it indicate?

10 / 40

Tankers used to transport hazardous materials on vehicles must be marked with:

11 / 40

In column 1, the "D" symbol means:

12 / 40

An "A/W" the first column of the hazardous materials table means:

13 / 40

The designation RQ identifies the material's:

14 / 40

Select how brakes work on long, steep downgrades:

15 / 40

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

16 / 40

What is the purpose of the supply pressure gauge?

17 / 40

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

18 / 40

You should___to reduce the air leakage rate.

19 / 40

Select the true statement about tractor protection valve:

20 / 40

Select the true statement in regards to handing triples and doubles

21 / 40

When should you not use the parking brakes?

22 / 40

Which of the following is NOT something you need to know in order to determine if you need to use placards?

23 / 40

Select the true statement about converter dollies:

24 / 40

Select the true statement in regards to a converter dolly:

25 / 40

Placarded vehicles must carry which type of fire extinguisher?

26 / 40

How do you check the air compressor governor "cut in" and "cut out" pressures?

27 / 40

When approaching railroad tracks, stop your bus:

28 / 40

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

29 / 40

Which of the following must drivers have in their possession while transporting class A or B explosives?

30 / 40

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

31 / 40

What is a common cause of tire fires?

32 / 40

The direction of liquid movement not prevented by baffles is:

33 / 40

Students exit the bus and walk:

34 / 40

Which of the following types of emergency equipment must you have on your bus?

35 / 40

What does the air compressor governor control?

36 / 40

What will occur as a result of failing to perform all 3 components of the air brake check?

37 / 40

Do you need to stop before a railroad crossing if you are hauling 100 pounds of Division 4.3 Dangerous When Wet material?

38 / 40

When would you lock some emergency roof hatches in a partly open position?

39 / 40

What are slack adjusters?

40 / 40

Make sure____when the front trailer supports are up and the trailer is sitting on the tractor.

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CDL Category Practice Tests

CDL Practice Test

How To Get A washington Commercial Drivers License

To be eligible for a CDL in Washington, applicants must meet the following age eligibility requirements.

  • Be at least 18 years old to operate a commercial vehicle intrastate (within Washington only).
  • Be at least 21 years old to operate a commercial vehicle interstate (outside of Washington).

Washington State CDL DOL applicants must be deemed to be physically fit to operate a commercial vehicle and pass a vision test. Applicants are required to submit the following documents.

  • (Form MCSA-5876) Medical Examiner’s Certificate (This document must be completed by an FMCSA-approved physician.
  • Self-Certification Document

Interstate non-excepted (drivers who do not work for the state or federal governments) must meet federal DOT requirements. Intrastate non-excepted drivers must meet the state requirements.

Drivers who have had their licenses revoked, suspended, denied or canceled are not eligible for a CDL in Washington. Applicants can be disqualified for having multiple licenses.

Washington CDL Endorsements

  • H – Hazmat Vehicles
  • N – Tank Vehicles
  • P – Passenger Vehicles
  • S – School Bus
  • T – Double or Triple Trailer
  • X – Combination Tank Vehicles and Hazmat Vehicles

Hit the Open Road

washington CDL License Test Tips

All Washington CDL applicants must pass the general knowledge test prior to taking the skills test. This test consists of 50 questions. To pass the Washington test, applicants must score 80 percent or higher. Applicants who require additional endorsements must pass additional tests and pay the required fees. The Washington skills test can be taken 14 days after applicants pass the knowledge test. It includes a pre-trip vehicle inspection, basic control skills and on-road driving. Applicants must pass each section.

Military veterans and current military members can apply to have the skills exam waived if they meet the requirements. To qualify for a waiver, applicants must:

  • Be active duty or honorably discharged from the military within the past year.
  • Have at least 2 years of experience operating a commercial vehicle as part of their military duties.
  • Submit (Form CDL-SK TST WVR) Application for Military Skills Test Waiver.
  • Submit (Form MCSA-5876) Medical Examiner’s Certificate.
  • Submit (Form 649-F) Medical Examination Report for Commercial Fitness Determination.

Additional Information

Information on the Washington State Department of Licensing

The Washington State Department of Licensing administers CDL license testing and regulations in Washington. To get more information contact them via:

Website: https://www.dol.wa.gov/driverslicense/cdl.html

Phone: 360.902.3900


Additional Washington CDL Helpful Links

Please use the links below to access Washington CDL testing resources and to learn more about practice driving tests for the state of Washington.