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

To be sure that air is supplied to the second trailer:

keep an eye of the air gauge for a drop of 30 psi

while driving at 10 mph, use the hand valve. The vehicle should stop in the same distance of a single trailer moving at 5 mph

open the emergency line shut off at the back of the second trailer

crank the engine brake

2 / 40

The gauge that needs to come up to normal levels after starting the engine within a few seconds is _____.

oil temperature

blood pressure

air brake pressure

oil pressure

3 / 40

What do you need to do to supply air to the air tanks of the second trailer?

none of the answers listed

open the shut off valve at the back of both trailers

close the shut off valves at the back of each trailer

open up the shutt off valves on the rear of the first trailer and close the shut off valve at the back of the second trailer

4 / 40

With Division 1.1, 1.2, or 1.3 Class A or B, how close can you park to a bridge, tunnel, or building?

Do not park within 500 feet.

Do not park within 100 feet.

Do not park within 300 feet.

Do not park within 200 feet.

5 / 40

Select the true statement about stop valves in a cargo tank:

They protect the piping and tank during rear end collisions.

They will close in an emergency.

They will fall off in an emergency.

They are manually operated.

6 / 40

Select the accurate statement in regards to rolling up the landing gear to complete the coupling process.

you should grease the landing gear the increase the speed of the process

you should leave the landing gear at the half way mark to make the uncoupling process easier later

you should use a high gear to make the process faster

you should use a low gear until the tractor is supporting the trailer

7 / 40

Select which is not an engine compartement belt:

An air compressor belt

A power steering belt

A water pump belt

A safety belt

8 / 40

To test the security of the tractor semi trailer connection you should:

look at it carefully after pulling forward gently in a low gear against the locked trailer brakes

with the trailer brakes locked, rock the trailer back and forth

put the tractor in a high gear and quickly pull ahead

you don't need to check it

9 / 40

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

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

press down on the brake pedal twice

all answers listed

have the trailer brakes off

10 / 40

Do empty trucks have the best braking?

yes, but only on wet surfaces

yes, but only if the truck is newer than 1998

yes

11 / 40

It takes special care to drive tankers with liquid in them because:

The low center of gravity of the load.

The baffles create odd rocking motions.

The movement of the liquid even when the truck is stopped.

The high center of gravity of the load.

12 / 40

If your bus has an emergency exit door, it must:

Have a red electric door light turned on at all times.

Not have any signs, stickers, or markings anywhere near it.

Be closed when operating the bus.

All of these answers are correct.

13 / 40

The minimum tire tread depth for front tires is:

1/2-inch

1/32-inch

3/8-inch

4/32-inch

14 / 40

How do you check the air compressor governor "cut in" and "cut out" pressures?

all of these answers are correct

monitor the air pressure gauge

decrease the tank pressure by stepping on and off the brake

run the engine at a fast idle

15 / 40

You should_____to make an emergency stop with air brakes when using the stab braking method.

apply a firm pressure to the brakes, release the brake pedal once the wheels lock and then apply pressure to the brakes onces the wheels start rolling again

rapidly and lightly pump the brake pedal

apply pressure to the brake pedal until the wheels lock and then stay off of the pedal for as long as the wheels are locked

apply a full hand valve until you stop and press firmly on the brake pedal

16 / 40

You should follow the posted speed limits for curves and be aware of:

A rollover may occur even when driving at the posted speed limit.

The higher center of gravity on a tank truck.

All answers listed.

The posted speed limit may be too high for safety.

17 / 40

Make sure that____when the front trailer supports are up and the trailer is resting on the tractor.

there is enough clearance between the landing gear and the tractor frame

there is enough clearance between the lower and upper fifth wheel

the kingpin has been removed

the safety latch is in the open position

18 / 40

Select the statement of what you should not do if you are required to drive through flowing water or deep puddles.

quickly turn the steering wheel side to side

drive at a high speed

shift into a lower gear

increase engine rpm

19 / 40

Cargo tanks are:

Bulk packaging permanently attached to your vehicle.

Filled while they are off your vehicle, then attached for transportation.

Bulk packaging temporarily attached to your vehicle.

Only made in one size.

20 / 40

If you are drowsy, you should _____ before you drive.

drink coffee

take a cold shower

get sleep

do a little exercise

21 / 40

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

White i indicates the highest level of radioactivity.

Black iii indicates the highest level of radioactivity.

Yellow iii indicates the highest level of radioactivity.

Yellow ii indicates the highest level of radioactivity.

22 / 40

What product is typically carried in a liquid tank trailer without baffles?

Food or milk products.

Fuel.

Hydrogen peroxide.

Fertilizer.

23 / 40

How often should you check the cargo you are transporting?

after every break you take during driving

every 150 miles or every three hours

all of these answers are correct

within the first 50 miles after beginning a trip

24 / 40

Surge affects the handling of a tanker by:

None of the answers listed.

Allowing you to take tighter turns.

Moving the truck in the direction the liquid flows in.

Increasing the wind drag.

25 / 40

Select the true statement in regards to an application pressure gauge:

it shows how much air pressure you are applying to the brakes

it prevents the brakes from failing

when accelerating it releases air

it is connected to the generator

26 / 40

What color are all school buses painted?

National school bus yellow.

The individual district decides the exact color.

Orange yellow.

Florescent yellow.

27 / 40

What is the value of the overhead rear-view mirror inside of the bus?

To monitor the driver's appearance.

To monitor passenger activity.

To provide visibility directly in the back of the bus.

To check blind spots.

28 / 40

Suspension systems:

keep the brake drums from failing

keep the axles in place

keep the steering wheel tight

keep the load secure

29 / 40

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

The legal weight limits.

The weight of it.

The amount of expansion that will occur.

All of the answers listed.

30 / 40

How often should air tanks be drained?

once a day

every 4-5 days

every 7 days

every 6 hours

31 / 40

Why should you know the outage?

Heavier liquids don't require outage.

Baffles are not always permitted with certain types of liquids.

Just in case you become a contestant in a trivia competition.

Liquids expand different amounts.

32 / 40

Which trailer is most likely to turn over when you make a sudden turn while pulling doubles?

trailers will never turn over

the front trailer is twice as likely

the rear trailer is twice as likely

there is an even chance for either trailer

33 / 40

Select the true statement in regards to brake drums:

All of these answers are correct.

They are bolted to the wheels.

They are located at both ends of the axles of the vehicle.

Hold the brake linings and shoes.

34 / 40

Select the portion of the combination vehicle that is most likely to turn over suddenly when pulling a double trailer:

the back trailer

the front trailer

the tractor

all are equally likely

35 / 40

Select the statement that best describes what the service line is for.

all answers listed

it is controlled by the trailer hand brake and carries air

it is controlled by the foot brake or trailer hand brake and carries air

it is controlled by the foot brake and carries air

36 / 40

What should the driver pay special attention to when driving smaller tanks?

The high center of gravity.

All answers listed.

The level of the fluid.

The distrubition of weight.

37 / 40

This object should not be spliced, cut, chafed, or worn through to allow steel braid to show.

Electric/air lines

The lockjaw

Tires

Mud flaps

38 / 40

Select the true statement about converter dollies:

they usually do not have spring brakes

because of their small size they have little braking power

all answers listed

they typically require a glad hand converter

39 / 40

What action should you take before driving while drowsy?

open your vehicle windows for some fresh air

drink energy drinks

drink a cup of coffee

pull off the road and get some sleep

40 / 40

If your bus is equipped with an emergency exit door, it must:

Be secured when the bus is being driven.

All of these answers are correct.

Not have any signs, stickers, or markings near it.

Always have a red door light turned on.

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

CDL Category Practice Tests

CDL Practice Test

How To Get An oregon Commercial Drivers License

Hit the Open Road

oregon CDL License Test Tips

Additional Information

Information on the Oregon Department of Transportation

Additional Oregon CDL Helpful Links

oregon
CDL Practice Test