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

_____ create a little above 90 degree angle between the adjuster arm and push rod when the brakes are released and no less than 90 degrees when the brakes are applied.

brake drums

air lines

brake disc

slack adjusters

2 / 40

Select the true statement in regards to stopping distance and speed:

A wet road will double the stopping distance at any speed.

All answers listed.

You require 4 times as much stopping distance when driving at 40 mph compared to 20 mph.

Larger / heavier vehicles generally take longer to stop.

3 / 40

What does the amount of liquid allowed in the tank depend on?

The legally allowed weight limits.

Whether and how much the liquid will expand during the trip.

The size of the tank.

All answers listed.

4 / 40

You should___when driving down a long steep hill.

release the brake once the vehicle is traveling 5 mph below the safe speed

begin braking once the vehicle is 10 mph above safe speed

repeatedly pump the brake pedal

use the engine brakes only

5 / 40

The interlock system for the brake and accelerator on a transit coach may be used:

As a safety feature when the exit door is open.

All of these answers are correct.

To replace the parking brake.

To replace the rear door emergency buzzer.

6 / 40

Where should the safety catch for the fifth wheel locking lever be located for coupling to be complete?

below the locking lever

through the locking lever

above the locking lever

outside of the locking lever

7 / 40

What is the best way to see the sides and rear of your vehicle?

all of these answers are correct

your mirrors

a helper

rear view cameras

8 / 40

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

Coolant

Voltmeter/ammeter

Gas tank

Oil pressure

9 / 40

The parking brakes should be used____in air brake vehicles.

only when parked on an incline

every time the vehicle is parked

only during post trip inspection

as rarely as possible

10 / 40

How do you secure a second trailer to your combination vehicle?

use the emergency air brakes or the trailer's spring brakes only

none of the answers listed

use emergency air brakes, spring brakes, and wheel chocks together

use wheel chocks only

11 / 40

How can you determine if your vehicle is equipped with ABS?

all of these answers are correct

check for yellow abs malfunction lamps on the instrument panel

check if your vehicle was manufactured after March 1, 1998 (they are required to have the panel light)

look for wheel speed sensor wires that are coming from the rear of your brakes

12 / 40

You should be in the proper gear before going down a hill because:

it builds up the air pressure in the air tanks

it helps control your speed better

brakes may fail or fade from excessive heat due to relying on them too much and not using the engine brake effect

water may build up in the air tanks if you do not rely on the engine brake

13 / 40

Air pressure loss in a vehicle with a fully charged air system should be less than_______after the initial drop and brake applied.

none of the answers listed

4 psi a minute

1 psi a minute

3 psi a minute

14 / 40

The most stable tanker shape is:

Elliptical

Square

Cylindrical

Round

15 / 40

What method should be used to test that the air is flowing to all the trailers?

listen for air flow after opening the shutoff valves at the rear of the last trailer

only a certified mechanic can check for this

pump the brakes with the windows down

check the pressure indicator dial on the final trailer

16 / 40

Select the true statement about dual air brake systems.

all of these answers are correct

there is a single set of brake controls

there is a primary system and a secondary system

one system controls the front axle and the other controls the rear axle

17 / 40

When stopping for railroad tracks, you must stop no closer than how many feet before the nearest track?

18 / 40

How do you test your service brakes?

release the air pressure and activate the parking brake

pull over and activate the parking brake

apply pressure to the brake pedal when moving at highway speeds

after releasing the parking brake, move forward slowly and apply pressure to the brake pedal

19 / 40

If you are traveling at 55 mph in a 30-foot vehicle, you should leave how many seconds of following distance?

4 seconds

6 seconds

3 seconds

7 seconds

20 / 40

Is it mandatory that all vehicles with air brakes have low air pressure warning signals?

for large vehicles only

for small vehicles only

yes

21 / 40

The emergency air line is _____and the service air line is____.

red, green

white, blue

red, blue

yellow, white

22 / 40

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

The dock workers

The shipper

The driver

The carrier

23 / 40

When backing your vehicle, which of the following is NOT recommended

back towards the right side

use the lowest reverse gear

back and turn towards the driver's side

back as slow as possible

24 / 40

What is a common cause of tire fires?

cold tires

all of these answers are correct

underinflated tires

overinflated tires

25 / 40

By law, the warning lights must only be used when approaching a:

Busy intersection.

Any stop the bus makes.

Sharp turns.

Stop to load or unload students.

26 / 40

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

Not allow the rider to do it.

Put the materials in the bus's "safe box".

Instruct the rider to sit next to an open window.

Have the rider pay a second fare.

27 / 40

You should brake on a long steep downgrade hill as a supplement to the braking effects of the engine

when the vehicle is runaway

yes

when the GVCW is above 20,000 lbs

28 / 40

What do you do first during step 3 of starting the engine and inspecting the inside of the cab?

Make sure the parking brake is activated after getting in the cab.

Start the engine after getting in the cab.

Listen for any unsual noises after starting the engine.

Shift the gear to neutral.

29 / 40

Buses may NOT have recapped or regrooved tires:

Anywhere except on the front wheels.

On the outside rear wheels.

When it's been raining.

On front wheels.

30 / 40

How do you supply air to the trailer tanks?

by connecting the red and blue lines

by pushing in the trailer air supply valve

by pulling out the trailer air supply valve

by connecting the service line glad hand

31 / 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.

Make sure your passengers are wearing seat belts.

Warn passengers with a loud and clear voice.

None of these answers are correct.

32 / 40

Select the true statement about speed and stopping distance.

None of these answers are correct.

When the road is wet it will double your stopping distance.

Tank surge will decrease your stopping distance.

You need two times the stopping distance when driving at 40 mph compared to 20 mph.

33 / 40

Which signals may be used to warn of a stopped vehicle that contains explosives?

Reflective triangles

All of these answers are correct

Flares or fuses

Signal fires

34 / 40

When approaching a school bus stop, you should:

All of these answers are correct.

Gradually decrease speed until the stop.

Continuously check all mirrors.

Activate your overhead amber lights.

35 / 40

Should your air compressor stop working:

you will lose your ability to brake immediately

there will be no affect to your brakes

the brakes will lock up on you immediately

there will still be air pressure left in the air tanks

36 / 40

Drivers placard their vehicle to _____ the risk.

communicate

elevate

minimize

take away

37 / 40

Do empty trucks have the best braking?

yes

yes, but only on wet surfaces

yes, but only if the truck is newer than 1998

38 / 40

Where are shut-off valves located?

at the back of the trailer

at the front and back of the trailer

at the front of the trailer

either at the front or the back of the trailer

39 / 40

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

None of these answers are correct.

Lifted neutral graftring.

Low-range pneumatic gearbox.

Liquified natural gas.

40 / 40

Select the true statement in regards to when a bulk tank vehicle stops at an intersection on a slippery surface:

The trailer may slide to the side due to the rocking motion.

The liquid may leak out of the tank.

The movement of the liquid may push the truck into the intersection.

The trailer may slide into the oncoming traffic.

Your score is

The average score is 0%

5/5 - (1 vote)

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

CDL Category Practice Tests

CDL Practice Test

How To Get A washington Commercial Drivers License

Hit the Open Road

washington CDL License Test Tips

Additional Information

Information on the Washington State Department of Licensing

Additional Washington CDL Helpful Links

washington
CDL Practice Test