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

What does the drain valve for air tanks remove?

2 / 40

If you double your speed, what will happen to your stopping distance?

3 / 40

When this item is missing or loose, movement may occur between the fifth wheel assembly and the frame.

4 / 40

You should_____when the low pressure warning is activated:

5 / 40

What is the benefit of ABS?

6 / 40

Select the item that is not checked in the engine compartment:

7 / 40

The air leakage rate for a combination vehicle should not exceed ____psi a minute.

8 / 40

What is a king pin?

9 / 40

Commerical vehicles typically have this type of brake.

10 / 40

What are the 3 methods for securing a second trailer before coupling?

11 / 40

This object should not move more than an inch by pulled by hand with the brakes released for manual slack adjusters.

12 / 40

This gauge will indicate if the generator or alternator is charging:

13 / 40

If a rider wants to bring a car battery or a can of gasoline or kerosene aboard your bus, you should:

14 / 40

Where are shut off valves located on trailers that are doubles or triples?

15 / 40

Upon what does the amount of liquid you can carry in a load depend?

16 / 40

The purpose for the emergency air line is:

17 / 40

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

18 / 40

What are some things you should check on the front of your vehicle when doing the walk-around inspection?

19 / 40

What should you hook up before backing a tractor to a trailer for coupling?

20 / 40

When you have a major leak in the service line and you apply pressure to the brakes, the service air pressure will escape and:

21 / 40

What is the first thing to do if your vehicle catches fire while driving?

22 / 40

Which of the following is NOT an appropriate reason to flash your braking lights?

23 / 40

Students exit the bus and walk:

24 / 40

When driving normally, some drivers use the hand valve before applying the brake pedal to prevent jack knifing. Select the most appropriate response to this statement.

25 / 40

When backing, what is the best method to use to avoid blind spots?

26 / 40

There are 2 reasons as to why hauling liquids take special care. One reason is the ___center of gravity.

27 / 40

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

28 / 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?

29 / 40

With most hazardous materials, you may park within 5 feet of the road briefly, if your work requires it. The materials that are the exception and do not allow parking this close to the road are:

30 / 40

Select the true statement in regards to driving a truck with triple or double trailers:

31 / 40

A driver of a tanker should use an escape ramp when _____.

32 / 40

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

33 / 40

Select why you should not use the trailer hand valve while driving:

34 / 40

This object should not be worn dangerously thin where visible.

35 / 40

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

36 / 40

Do empty trucks have the best braking?

37 / 40

Which of the following statements about "Radioactive" labels is true?

38 / 40

Your vehicle is going down a long hill and your brakes begin to fail. What should you do?

39 / 40

Play of the steering wheel should not exceed:

40 / 40

You must not allow riders to stand:

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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.