washington
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

Which of the following is the most important reason for doing a pre-trip inspection?

to make sure nothing has been stolen from the vehicle

safety for yourself and other road users

to make sure the vehicle will make your destination

because other drivers do it

2 / 40

What is the best way to prevent brakes form overheating while drive down a steep grade?

use countersteering practices

use the trailer brakes only

drive at a speed of 5 mph below your safe speed

use the stab braking method

3 / 40

When does your vehicle's single brake system need an adjustment?

if the compressor cuts out at between 70 and 90 psi

if the pressure builds from 50 to 75 psi in less than 3 minutes

when the pressure builds from 85 to 100 psi in less than 1 minute

when the governor stops between 75-90 psi

4 / 40

A disruptive passenger:

Is not your responsibility.

Should not be discharged where it would be unsafe for them.

Should not be allowed on the bus.

May be thrown off the bus.

5 / 40

Select the statement that is not part of the air-brake system:

service brake system

emergency brake system

clutch brake system

parking brake system

6 / 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.

engine brakes

hydraulic brakes

air brakes

parking brakes

7 / 40

How often should you drain your air tanks?

at the beginning of each month

at the end of each shift

at the end of each trip

at the end of each week

8 / 40

You must first______to supply air to the trailer.

cross the air lines to check for the presence of leaks

push in the tractor protection valve

pull out the tractor protection valve

turn off the engine so you can hear the brakes

9 / 40

How far away are you required to park from a bridge, tunnel, or building if you are carrying Division 1.2 or 1.3 materials?

At least 600 feet

At least 500 feet

At least 400 feet

At least 300 feet

10 / 40

This item does not need to be checked during the cab check.

The defroster/heater

The windshield wipers and fluid levels

The horn

The air conditioning

11 / 40

Never refuel your bus:

With any of the windows open.

Without a static chain.

In a closed building with passengers on board.

With a higher grade of fuel.

12 / 40

What is the purpose of a driver placarding his or her vehicle?

Communicating risk.

Warning those with children to drive in another lane.

Giving people something interesting to look at while driving.

Forcing other drivers to stay 20 feet away in every direction.

13 / 40

Select the true statement in regards to brake drums or discs:

they are not allowed to have any cracks

the linings should fit loosely around the brake shoe

they should always be kept well-greased up

they should not have cracks that are longer than half the width of the friction area

14 / 40

If you have to swerve to avoid a hazard, it's important to:

Know where other vehicles are around your bus by checking your mirrors.

Warn passengers with a loud and clear voice.

Make sure your passengers are wearing seat belts.

None of these answers are correct.

15 / 40

An air system that is fully charged will typically have ___ psi of pressure.

125

250

200

16 / 40

This object should be free of shiny treads, rust, free of cracks and distortions.

Lug nuts

None of the answers listed

Bolt spacers

Rims

17 / 40

There must not be more than_____for engine compartment belts.

1/2 inch of play at the end of the belts

1/2 inch of play at the center of the belt

1/4 inch of play at the ends of the belt

3/4 inch of play at the center of the belt

18 / 40

This should have no illegal stickers, dirt, obstructions, or damage to the glass.

The headlights

The rearview mirror

None of the answers listed

Mirrors and windshield

19 / 40

There must be a hazardous materials identification number on the ______ and on the ______.

shipping papers, package

package, trailer

trailer, packages

invoice, shipping papers

20 / 40

The method used to make sure the spring brakes will come on automatically is to:

Apply pressure on and off the brake pedal to decrease the air tank pressure. The parking brake knob should pop out when the air pressure drops to 120 psi.

Apply pressure on and off the brake pedal to decrease the air tank pressure. The parking brake knob should pop out when the air pressure meets to the manufacturer’s specification.

Apply pressure on and off the brake pedal to decrease the air tank pressure while driving at a high a speed. The parking brake knob should pop out when the air pressure meets to the manufacturer’s specification.

Apply pressure on and off the brake pedal to increase the air tank pressure. The parking brake knob should pop out when the air pressure meets to the manufacturer’s specification.

21 / 40

Which of these is a good rule for backing a straight bus?

Use your head as the mirrors are unreliable.

Back quickly while no one is coming.

Back and turn toward the driver's side.

Back toward the side opposite the driver.

22 / 40

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

you will have more space to maneuver in the lot

the process will be faster and easier

damage could occur to the landing gear

you won't have to take as many steps around the vehicle

23 / 40

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

This material has no restrictions when shipped by air and/or water.

This material is only restricted when shipped by air and/or water.

It is ok to ship this material by air only.

There is no restrictions with this material if shipped by water only.

24 / 40

The most dangerous time during the school bus ride is:

Crossing railway crossing.

When loading and unloading students.

When the students become unruly on the bus.

On long bus journeys.

25 / 40

A tractor should not be backed under a trailer until the whole air system is:

at a level of 70 and 90 psi

at a normal pressure

at a level of 50 and 70 psi

at half of its normal pressure

26 / 40

Why should you test the tractor protection valve?

to avoid loss of air from the trailer brakes

to avoid the emergency brakes kicking on due to loss of air

to avoid loss of air from the air hose

all answers listed

27 / 40

What is the benefit of ABS?

all of these answers are correct

it prevents the wheels from locking up during heavy braking or slippery conditions

it decreases your stopping distance

it provides an added layer of safety for truck drivers

28 / 40

The transport index of a radioactive material:

Is something that only the shipper needs to worry about.

Is another way of writing the weight of the package.

None of these answers are correct.

Tells the degree of control needed during transportation.

29 / 40

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

Keep driving for help as quickly as possible.

Keep driving, slowly and cautiously, until you reach a phone.

Send someone for help with all the necessary information.

Leave your truck parked with emergency lights on and walk for help.

30 / 40

The longest crack that brake or disc drums can have is:

None of the answers listed.

Cracks are not permitted.

1/2 the width of the friction area.

1/2 inch across in a straight line.

31 / 40

You should place the starter switch key into your pocket while you are performing the pre-trip inspection because:

all of these answers are correct

someone could start and move the truck

someone could steal the truck

it could damage the starting mechanism

32 / 40

You should keep a minimum of ____between another vehicle and the double trailer with 100 ft truck driving at 30 mph.

13 seconds

15 seconds

10 seconds

8 seconds

33 / 40

At the end of each shift you should:

Report any damage.

Inspect your bus.

Report any defects.

All of these answers are correct.

34 / 40

Which of the following will confirm that you are driving with anti-lock brakes?

Red indicator lamp on the brake cylinder.

Yellow abs malfunction lamp on the instrument panel will light when you start the engine.

The certification on the driver side door.

The bus operators manual.

35 / 40

When would a drive-wheel skid result in a jackknife when pulling doubles?

when the trailer pushes the towed vehicle sideways

when the tractor brakes lock up

when the tractor spins around

when the trailer slides to the right into the shoulder

36 / 40

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

pump the brakes until you come to a stop

accelerate quickly until you find a place to pull over

stay off the brake and hold the steering wheel firmly

disengage the clutch so you are in neutral gear

37 / 40

You must control how far packages labeled "Radioactive II" or "Radioactive III" are located from people and cargo space walls by referring to:

The segregation and separation chart.

The transport index and the separation distances table.

The table of hazardous materials.

The list of hazardous materials and reportable quantities.

38 / 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?

At least 100 feet.

At least 25 feet.

At least 50 feet.

At least 75 feet.

39 / 40

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

200 feet behind the bus.

The entire area to the rear of the mirror along the side of the bus.

The children's exit path out of the main bus door.

The right and left front tires touching the ground.

40 / 40

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

all answers listed

press down on the brake pedal twice

supply air to the trailer system and then pull the air supply knob out

have the trailer brakes off

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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.

washington CDL Practice Test