oregon
CDL Practice Test

Welcome to the Oregon CDL practice test site. You can take these practice test questions as many times as you like, as all of the driving practice tests on this site are completely free. The questions are all derived from the Oregon CDL driving manual and should help you prepare for the official Oregon CDL test. 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

How much space should there be between the lower and upper fifth wheel?

1 to 2 inches

it is dependent on the load you are carrying

zero

1/4 to 1/2 of an inch

2 / 40

Should your air compressor stop working:

the brakes will lock up on you immediately

you will lose your ability to brake immediately

there will be no affect to your brakes

there will still be air pressure left in the air tanks

3 / 40

You should_____when the low pressure warning is activated:

pump the brake pedal to come to a stop immediately

maintain highway speed and keep an eye on your air pressure gauge

come to a safe stop while you still have control of the brakes

wait until the air brakes kick in automatically

4 / 40

What can you do at an accident site to help avoid another accident?

leave your vehicle, do nothing, and get to higher ground

stay in your vehicle and do nothing until help arrives

have a drink to calm your nerves

put out warning devices so people don't run into the accident site

5 / 40

Select which is not an engine compartement belt:

An air compressor belt

A power steering belt

A water pump belt

A safety belt

6 / 40

You should never brake and should rely only steering inputs to avoid a crash while driving a tanker truck.

False

True

True, but only in ideal conditions

True, but only on downgrades

7 / 40

Which of the following is a clue another driver is impaired:

All of these answers are correct.

Exiting the interstate when there's no gas station visible.

Open window in warm weather.

Stopping at a green light, or waiting too long at a stop.

8 / 40

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

Sharp turns.

Any stop the bus makes.

Busy intersection.

Stop to load or unload students.

9 / 40

A battery box check is important. The battery must be secure, connection must be tight, and cell caps must be present. In addition these items should be checked:

The fluid level inside the battery.

Battery connections should not show signs of excessive corrosion, but the battery box and cover or door is unimportant.

Battery connection should show signs of excessive wear.

Battery connections should not show signs of excessive corrosion, and the battery box and cover or door should not be damaged and should be secure.

10 / 40

Select how brakes work on long, steep downgrades:

they are a supplement to the braking effect of the engine

it is the main braking mechanism

it's the main braking mechanism with the engine braking system available for emergency situations

it does not do anything

11 / 40

When you discharge an unruly passenger, you must choose a place that is:

Dark and poorly lighted.

Off the regular route.

As safe as possible, or the next stop.

The next stop.

12 / 40

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

bridges and tunnels

fire and flooding

traffic and road conditions

truck stops and police

13 / 40

For what reason do you keep the starter switch key in your pocket during the pre-trip inspection?

you will need it to open the side box

so no one moves the vehicle while you are inspecting underneath it

so you don't lose it

you will need it to inspect the trailer

14 / 40

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

Red indicator lamp on the brake cylinder.

The certification on the driver side door.

The bus operators manual.

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

15 / 40

Is it important to look into the back of the fifth wheel to see if the lockpin is locked in?

yes

only every 7 days

only at the end of the shift

16 / 40

How do you check the power steering fluid?

By looking through the reservoir sight glass.

Via indicator light on the dashboard.

Via the power steering fluid dipstick.

Undo the oil fill cap and check the level.

17 / 40

A slack adjuster is:

a lever that connects the brake drum to the brake shoe

a lever that connects the brake chamber push rod with the foundation brake camshaft

a lever that connects the return spring and the brake chamber push rod

a lever that connects the brake camshaft with the brake chamber

18 / 40

The minimum tread depth for steering axle tires is:

4/32 inch

None of the answers listed

2/23 inch

14 mm

19 / 40

What might happen if you swing wide to the left before you turn right?

all of these answers are correct

someone might try to pass you on your right

you might damage your leaf springs

someone might try to pass you on your left

20 / 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

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

the trailer brakes will not be evenly applied

21 / 40

Air pressure should build___with a dual air system.

from 85 to 100 psi in 45 seconds

from 70 to 125 psi in 60 seconds

from 60 to 100 psi in 45 seconds

from 50 to 80 psi in 60 seconds

22 / 40

When arriving at the destination announce:

The reason for stopping.

The location.

The next departure time.

All of these answers are correct.

23 / 40

You should look into the back of the fifth wheel on a dolly to see if it is locked onto the kingpin.

only in a level loading dock

false

only at the end of a shift

true

24 / 40

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

in a closed position for the rear trailer and an open position for the front trailers

in an open position

in an open position for the rear trailer and a closed position for the front trailer

in a closed position

25 / 40

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

Oil pressure

Coolant system

Power steering

Voltmeter

26 / 40

The floor liner for explosives may not:

Contain cracks or holes.

Contain any of these materials.

Contain nails or screws.

Contain steel or iron.

27 / 40

Do not tow or push a disabled bus with riders aboard the vehicle, unless:

Getting off the bus would be unsafe.

Bus is on a drawbridge.

Your employer tells you to.

You are also a class a tow truck driver.

28 / 40

In what location must you keep your shipping papers which describe any hazardous materials?

In a fire-safe pouch under the passenger seat while you are driving.

On the driver's seat anytime you are outside of the vehicle.

In a fire-safe pouch under the driver's seat that you can reach while you are driving.

In a locked glove compartment anytime you are outside of the vehicle.

29 / 40

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

back as slow as possible

back and turn towards the driver's side

use the lowest reverse gear

back towards the right side

30 / 40

When approaching railroad tracks, stop your bus:

15 and 50 feet before railroad crossings.

Only if you have manual transmission, then proceed with flashers on.

5-10 feet before railroad tracks.

On the tracks so you can see if the train is coming.

31 / 40

Double and triple trailers should be driven with care to avoid a rollover or jacknife.

only on downgrades

false

only in ideal conditions

true

32 / 40

Which of the following statements about downshifting is NOT true?

downshift before climbing a hill

downshift before entering a curve

downshift before starting down a hill

downshift when you get to the bottom of a hill

33 / 40

You should___when driving down a long steep hill.

begin braking once the vehicle is 10 mph above safe speed

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

repeatedly pump the brake pedal

use the engine brakes only

34 / 40

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

Never

For fresh air

Whenever you enter a tunnel

First day of spring

35 / 40

Select the best description of a baffle tank:

They are tanks divided down into multiple smaller tanks.

None of the answers listed.

It is one large tank.

They are divided and have holes for liquid to flow through controlling surge.

36 / 40

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

37 / 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.

38 / 40

In safe driving, what does communicating mean?

letting others know you are there by using turn signals, four way flashers, and horn

using a cb radio to let others know your intentions

using hand signals

all of these answers are correct

39 / 40

What should you check for when inspecting a converter dolly?

that the converter dolly air tank drain valve is in the closed position

that the spare tire is secured if there is one

all answers listed

that the safety chains are secured to the trailer

40 / 40

The minimum tire tread depth for front tires is:

1/2-inch

3/8-inch

4/32-inch

1/32-inch

Your score is

The average score is 0%

5/5 - (2 votes)

CDL Category Practice Tests

CDL Practice Test

How To Get An oregon Commercial Drivers License

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

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

Oregon CDL applicants must be medically certified that they are physically capable of operating a commercial vehicle and pass a vision test. Oregon applicants must have the forms signed by a CDL-certified doctor.

Applicants are required to submit Form MCSA-5876, a Medical Examiner’s Certificate and Form 735-7369, a Self-Certification of CMV Driving Type.

All required paperwork must be completed before applying for a CDL. These documents must be brought to the appointment at the Oregon Department of Motor Vehicles.

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

Oregon 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

oregon CDL License Test Tips

All Oregon CDL applicants must pass the general knowledge test prior to taking the skills test. This test consists of 50 questions. To pass the Oregon test, applicants must score 80 percent or higher. Applicants who require additional endorsements must pass additional tests and pay the required fees. The Oregon 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 military personnel.
Operate a commercial vehicle as part of their military duties.
Have been discharged from the military within the past 12 months of applying for a CDL.
Submit an Application for CDL Skills Test Waiver.

Additional Information

Information on the Oregon Department of Transportation

The Oregon Department of Transportation administers CDL license regulations in Oregon. To get more information contact them via:

Website: https://www.oregon.gov/ODOT/DMV/Pages/DriverID/CDLget.aspx

Phone: 503.945.5000

Additional Oregon CDL Helpful Links

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

oregon CDL Practice Test