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

To decide which placards you need, if any, what three things do you need to know?

Materials hazard class, location being shipped, and amount of all hazardous materials on your vehicle.

Materials hazard class, percentage of total volume, and amount of all hazardous materials on your vehicle.

Materials hazard class, amount being shipped, and amount of all hazardous materials of all classes on your vehicle.

Packing group numbers, amount being shipped, and amount of all hazardous materials of all classes on your vehicle.

2 / 40

Why do air brakes take longer to stop than hydraulic brakes?

it takes more time for the air to flow through the lines

the lines are hotter

longer reaction time

none of the answers listed

3 / 40

Select the definition for outage:

It is the liquid that must be drained off to meet legal carry limit.

It is loss of power to the headlights.

It is the process of liquid expansion as it becomes warm.

It is how much power is lost to the hydraulics.

4 / 40

How do you check the air flow to the last trailer?

listen for escaping air after opening the emergency shut off valve

watch the brake lights as you step on the brake pedal

while on an level surface, test the emergency brake lines

pull the vehicle forward and then step on the brakes

5 / 40

With Division 1.2 or 1.3 Explosive B, how close to the travelled part of the roadway can you park?

Minimum of 5 feet

Minimum of 10 feet

Minimum of 2 feet

Minimum of 15 feet

6 / 40

If you are stopped on an incline, how can you start moving without rolling back?

shift to neutral

aggressively pump the accelerator

apply the parking brake

fully engage the clutch

7 / 40

Why are you required to take an exam about air brakes?

it is a federal requirement

all trucks have air brakes

you cannot receive a CDL at all otherwise

you would have to get a CDL with a restriction otherwise

8 / 40

The air leakage rate for combination vehicles should not be more than _ psi a minute.

9 / 40

Which of the following should you NOT do if you experience a tire failure?

hold the steering wheel firmly

you need to be aware that a tire has failed

engage the brakes hard and immediately

stay off the brake pedal

10 / 40

Five hazard classes that require placarding in any amount are ______.

explosives 11, corrosive 8, flammable 3, explosives 14, and poison 61

corrosive 4, hazardous 14, flammable 2, explosives 7, and radioactive 12

poison gas 23, dangerous when wet 43, explosives 13, explosives 12, and explosives 11

none of these answers are correct

11 / 40

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

use the trailer brakes only

use countersteering practices

use the stab braking method

drive at a speed of 5 mph below your safe speed

12 / 40

______is a device that connects the service and emergency air lines between the tractor and trailer.

Top off valves

Glad hands

Service lines

Relay knife

13 / 40

Select the reason as to why you should not use the trailer hand valve while driving.

it releases too much air from the system

it could cause the trailer to skid

the trailer brakes will not be evenly applied

it should not be used on dry roads due to road conditions

14 / 40

Signs of distracted drivers include:

individuals listening to music too loudly

individuals driving at a consistent speed above the speed limit

vehicles exiting the roadway

drivers having conversations with passengers

15 / 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:

the tractor spring brakes will kick on

the trailer emergency brakes will kick on

the hand valve will stop functioning

the trailer tank pressure will be gone

16 / 40

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

125

250

200

17 / 40

Select the true statement in regards to converter dollies:

they typically have small braking power because of their size

they typically require a hand converter

they typically do not have spring brakes

they typically have a lot of stopping power because of their size

18 / 40

You must not allow riders to stand:

Between the wheel wells.

Within two feet of an emergency exit.

In front of the standee line.

Within two feet of any window.

19 / 40

The two main things to look ahead for while driving are _____.

fire and flooding

truck stops and police

bridges and tunnels

traffic and road conditions

20 / 40

What should you hear when you have the hand valve on and are testing the trailer brakes by opening the service air line at the back of the trailer?

air leaving the open valve

the emergency line valve to release air

the service brakes more to a fully applied position

the engine brake to kick on

21 / 40

One reason hauling liquids in tank vehciles require special care is:

Because of uneven expansion.

Because of the movement of the liquid.

Because of the extreme weight.

Because of strong winds.

22 / 40

The emergency air line is used to:

to alert emegency services when there is a problem

engage the tractor's front brake when there is air pressure loss

engage the trailer brakes when there is an air pressure loss

provide back up air pressure

23 / 40

How far before a railroad crossing should you stop your bus?

10 to 35 feet

15 to 50 feet

100 feet exactly

50 to 75 feet

24 / 40

Bus drivers must have a commercial driver license if they drive a vehicle designed to seat more than:

10 or more persons, including the driver.

16 or more persons, including the driver.

20 or more persons, excluding the driver.

15 or more persons, including the driver.

25 / 40

What kind of surge can occur in a tank with baffles?

Back to front

Bottom to top

Side to side

All answers listed

26 / 40

In what position should the converter dolly air tank drain valves and pintle hook be in?

open and latched

closed and latched

open and open

closed and open

27 / 40

Overhead inside mirror is used to:

See all of the students.

Monitor traffic that approaches and enters the blind spot area.

See the blind spot immediately behind the bus.

See the area where students exit the bus.

28 / 40

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

it is possible that the dolly tow bar could fly up making it difficult to re-couple

removing the dolly before uncoupling is not the correct procedure

so the rear-trailer's air brake system will stay charged and keep the trailer wheels locked to prevent rolling

to provide additional lateral stabilization to the front trailer

29 / 40

Which two special conditions indicate that you should downshift?

starting up a hill and finishing a curve

starting up a hill and entering a curve

starting down a hill and entering a curve

starting down a hill and finishing a curve

30 / 40

Never refuel your bus:

With any of the windows open.

In a closed building with passengers on board.

Without a static chain.

With a higher grade of fuel.

31 / 40

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

if the compressor cuts out at between 70 and 90 psi

when the governor stops between 75-90 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

32 / 40

The _____of the kingpin has the locking jaw close around it.

apex

shank

dull section

tip

33 / 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

34 / 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

35 / 40

Surge affects the handling of a tanker by:

Increasing the wind drag.

Moving the truck in the direction the liquid flows in.

None of the answers listed.

Allowing you to take tighter turns.

36 / 40

What is the safest way to stop unruly behavior on the bus?

Keep checking the rear view mirror so you can see what happened and report to the principal.

Have the unruly students move to the front of the bus.

Yell loudly for the students to sit down and behave themselves.

Pull off the road in a safe location, secure the bus, stand up, and tell the students what behavior you expect of them.

37 / 40

This object should not be worn dangerously thin where visible.

All answers listed

The brake linings

The air system lines

The brake chambers

38 / 40

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

A maximum capacity of 450 l or less if it is used as a receptacle for liquids.

Maximum net mass of 400 kg, or less than 450 l if used as a receptacle for a solid.

Maximum water capacity of 454 kg or less if used as a receptacle for gases.

All of these answers are necessary qualifications.

39 / 40

You are driving a 40 foot truck at 35 MPH, how much space (in seconds) should you keep in front of you?

6 seconds

5 seconds

3 seconds

4 seconds

40 / 40

The Emergency Response Guidebook (ERG):

Contains an index of hazardous material id numbers, which is why you must label things correctly.

All of these answers are correct.

Was created by the national department of transportation, so it is used nationwide.

Is studied by emergency personnel to help keep the public safe.

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