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 many different hazard classes are there?

2 / 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 lower and upper fifth wheel

the safety latch is in the open position

the kingpin has been removed

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

3 / 40

What are spring brakes?

they are brakes that automatically come on for a truck or trailer when the psi drops too low

they are powerful springs that hold back air pressure when driving

they do not function when the psi falls below 30 psi

all of these answers are correct

4 / 40

The school bus driver may be the only contact person from school system some parents meet. The percentage of such parents is as high as:

0.85

0.5

0.65

0.72

5 / 40

A disruptive passenger:

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

May be thrown off the bus.

Is not your responsibility.

Should not be allowed on the bus.

6 / 40

Vehicle handling can become unsafe if the weight is not properly balanced. Hard steering can be caused by:

too little weight on the driving axles

high center of gravity

under loaded front axles

too much weight on the steering axles

7 / 40

If hazardous material is spilling from your vehicle, do not move your vehicle:

Any more than safety required.

In an upwind direction.

Any more than 500 feet.

Any more that 450 feet.

8 / 40

Select the true statement in regards to unhooking the pintle hook while the converter dolly is still under the trailer.

this is not recommended as it could could cause damage to the pintle hook

this is not recommended because it may result in injury

this is recommended because it keeps the trailer from tipping over

this is recommended as it is standard procedure

9 / 40

What is always required before loading, driving, or unloading a tanker?

Registration of driving plan

An inspection

Clean the vehicle

Shift into park

10 / 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

11 / 40

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

you would have to get a CDL with a restriction otherwise

it is a federal requirement

you cannot receive a CDL at all otherwise

all trucks have air brakes

12 / 40

What are slack adjusters?

all of these answers are correct

they are between the push rod on disc brakes and power screw

they are between the S-Cam on drum brakes and the push rod

they are a part of the air brake system that adjusts the brakes

13 / 40

The minimum tread depth for steering axle tires is:

14 mm

4/32 inch

2/23 inch

None of the answers listed

14 / 40

How should the shut off valves at the rear of the trailer be when inspecting doubles?

open at the rear of the last trailer and front trailer

closed at the rear of the last trailer and front trailer

none of the answers listed

closed at the rear of the last trailer and open at the rear of the front trailer

15 / 40

Which of the following statements is FALSE:

Avoid fueling your bus with riders on board unless absolutely necessary. never refuel in a closed building with riders on board.

Do not transport intoxicated passengers.

Do not talk with riders or engage in any other distracting activity while driving.

Do not tow or push a disabled bus with riders aboard either vehicle, unless getting off the bus would be unsafe.

16 / 40

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

none of these answers are correct

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

17 / 40

Tires should should be replaced:

when the tread separates

all of these answers are correct

when there are broken valve stems

if the tread depth on your front tires is less than 4/32 deep

18 / 40

Remember to____when connecting the converter dolly to the rear trailer.

check the trailer height

all answers listed

ensure that the landing gear is slighty off of the ground

lock the trailer brakes

19 / 40

Which hazard classes must you NEVER smoke, or perform any activity involving fire, within 25 feet of?

Class 1 only

Classes 1, 2, 3, and 4

Class 4 only

Class 2 only

20 / 40

You should check the_____when loading small tanks equipped with bulkheads.

fuel to air ratio

percentage of water

expansion rate

distribution of the weight

21 / 40

Select the true statement about empty trucks:

they have poor traction due to wheel lockup and bouncing

empty trailers are easier to stop because there is not cargo shifting

they have a smaller stopping distance than full trailers

empty trucks stop in the same distance as a fully loaded truck

22 / 40

How do you hook a combination to a second trailer without spring brakes and without using wheel chocks?

have the trailer electric cord to a generator so it can supply braking power

go ahead and couple it

make sure the trailer won't roll when coupling

disconnect the air supply lines after supplying air to the trailer air system via the tractor

23 / 40

If you are already carrying 100 pounds of silver cyanide, what precautions must you take if you are given papers at a dock to carry 100 cartons of battery acid?

Make sure the battery acid is loaded on top of the silver cyanide.

Make sure the silver cyanide is loaded on top of the battery acid.

Inform someone and not load the battery acid.

Make sure there is plenty of space between the two.

24 / 40

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

is between 40 and 60 psi

is at half of the maximum pressure

at a normal pressure

is between 50 and 80 psi

25 / 40

If you double your speed, what will happen to your stopping distance?

none of these answers are correct answers are correct

it increases by four times

it increases by two times

it stays about the same

26 / 40

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

All answers listed.

The size of the tank.

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

The legally allowed weight limits.

27 / 40

You need to be extra careful when driving smooth bore tanks:

When stopping or starting.

When unloading or loading.

All answers listed.

When hauling food or milk products.

28 / 40

You should_____when the low pressure warning is activated:

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

pump the brake pedal to come to a stop immediately

wait until the air brakes kick in automatically

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

29 / 40

How high should you crank the landing gear?

as high up as it will go

until the crank handle is loose

for it to be 6 inches above the ground

so that you can clear railroad tracks

30 / 40

While completing the 2nd component of the air brake check you are required to turn the electrical power on, begin fanning off the air pressure by rapidly relasing and apply the foot brake and _____.

none of the answers listed

a low air warning device should sound before the air pressure drops below 60 psi

the tractor protection valve and parking brake valve should pop out before air pressure falls below 60 psi for combination vehicles

a low air warning device should sound before the air pressure drops below 40 psi

31 / 40

Select the statement that describes how you could damage the landing gear.

back under the trailer at an angle

back under the trailer in a straight path

have the tractor and trailer aligned

have the trailer kingpin centered over the fifth wheel

32 / 40

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

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

check for yellow abs malfunction lamps on the instrument panel

all of these answers are correct

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

33 / 40

Select the true statement in regards to a converter dolly:

it is a coupling device with only two axles and a sixth wheel to which a semitrailer can be coupled to the rear of a tractor-trailer combination forming a double bottom rig

it is a connecting device consisting of one axle which disconnects a semitrailer combination vehicle converting it into two separate trailers

none of the answers listed

it is a coupling device with one or two axles and a fifth wheel with which a semitrailer can be coupled to the rear of a tractor-trailer combination forming a double bottom rig

34 / 40

Drivers who transport route controlled radioactive materials must carry a dated certificate of radioactive materials training. This training must have ocurred within the last:

2 years

3 years

4 years

1 years

35 / 40

When transporting hazardous loads, you must check the tires at least:

Every 200 miles.

Twice every day.

Every two hours or 100 miles.

Every six hours.

36 / 40

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

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

Open window in warm weather.

All of these answers are correct.

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

37 / 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 use a low gear until the tractor is supporting the trailer

you should use a high gear to make the process faster

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

38 / 40

In safe driving, what does communicating mean?

using hand signals

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

all of these answers are correct

39 / 40

Which of the following statements about bus evacuation is true?

If time allows, notify the dispatcher about evacuation location, conditions, and type of assistance needed.

If time allows, notify the police.

If time allows, backup to the stop before evacuating the bus.

If time allows, walk through the bus and close all windows.

40 / 40

Never refuel your bus:

With any of the windows open.

With a higher grade of fuel.

In a closed building with passengers on board.

Without a static chain.

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