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

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

back towards the right side

back as slow as possible

back and turn towards the driver's side

use the lowest reverse gear

2 / 40

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

the front trailer is twice as likely

trailers will never turn over

the rear trailer is twice as likely

there is an even chance for either trailer

3 / 40

Select the statement that best describes what the trailer air supply control does:

when pushed in it supplies the tractor with air and when pulled out it supplies the trailer with air

when pushed in it supplies the trailer with air and when you pull it out it shuts off the air supply and puts on the trailer emergency brakes

when pushed it it supplies the trailer with air and when pulled out it supplies the tractor with air

when pulled out it supplies the trailer with air and when pushed in it shuts off the air and puts on the trailer emergency brakes

4 / 40

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

Open window in warm weather.

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

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

All of these answers are correct.

5 / 40

You may use DANGEROUS placards instead of separate placards for each Table 2 hazard class when:

Both of these conditions must be met.

You have not loaded 2,205 pounds or more of any table 2 hazard class material at any one place (you must use the specific placard for this material).

The correct answer is not listed.

You have 1,001 pounds or more of two or more table 2 hazard classes, requiring different placards.

6 / 40

The crack-the-whip effect is more likely to cause the front trailer to tip over.

there is an equal chance for trailers to tip

trailers never tip

true

false

7 / 40

At 55 miles-per-hour it takes about 6 seconds to stop a fully loaded truck and the braking distance is:

about 1/4 mile

about two truck lengths

about the length of a football field or 100 yards

about two car lengths

8 / 40

Which of the following is something the driver must watch for:

Poles and tree limbs at stops.

Appropriate clearance around and over the bus.

All of these answers are correct.

Gaps your bus needs to accelerate and merge with traffic.

9 / 40

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

In an upwind direction.

Any more that 450 feet.

Any more than safety required.

Any more than 500 feet.

10 / 40

Select the true statement in regards to brake drums or discs:

they are not allowed to have any cracks

the linings should fit loosely around the brake shoe

they should always be kept well-greased up

they should not have cracks that are longer than half the width of the friction area

11 / 40

Where can you find a shipper’s certification?

It is a separate document that all hazmat drivers must keep in their vehicles.

On the original shipping paper.

There is no such thing.

On all packages.

12 / 40

After the initial drop, the maximum leakage rates per minute is:

3 psi for combination vehicle and 1 psi for single vehicle

6 psi for a combination vehicle and 5 psi for single vehicle

10 psi for combination vehicle and 5 psi for single vehicle

4 psi for a combination vehicle and 3 psi for a single vehicle

13 / 40

A placarded vehicle must have at least ___ placards?

four

three

six

two

14 / 40

To maintain alertness during the trip, drivers should:

avoid medications that cause drowsiness

schedule trips during the daytime hours

get 8-9 hours of sleep

all of these answers are correct

15 / 40

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

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

crank the engine brake

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

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

16 / 40

How should you know when to shift?

every 3 to 5 seconds or engine speed

engine speed and the shift indicator light

engine speed and road speed

road speed and wind speed

17 / 40

You are inspecting the_____when looking for broken welds, cracks, holes, or other damage to the longitudinal frame member, cross members, box, and floor.

catwalk

fifth wheel

frame

apron

18 / 40

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

Lifted neutral graftring.

Liquified natural gas.

None of these answers are correct.

Low-range pneumatic gearbox.

19 / 40

When backing, what is the best method to use to avoid blind spots?

use mirrors on both sides

use a helper

back towards the driver's side, where you can see better

look at your path

20 / 40

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

Class 4 only

Class 1 only

Class 2 only

Classes 1, 2, 3, and 4

21 / 40

When driving a combination vehicle, the trailer breaks away severing the air lines. The trailer brakes should come on and ____.

the tractor will gain air pressure

the tractor protection valve will close

the tractor to lose all air pressure in the tanks

the trailer supply valve will remain open

22 / 40

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

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

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

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

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

23 / 40

What is the safest way to stop unruly behavior on 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

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

24 / 40

When using turn signals, which of the following should be avoided?

signal when you are merging into traffic

signal when you want to change lanes

signal before you exit

signal just before you start to make a turn

25 / 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.

All answers listed.

The posted speed limit may be too high for safety.

The higher center of gravity on a tank truck.

26 / 40

There should be ___space between the upper and lower fifth wheel after coupling.

1/30 inch

1/12 inch

none of the answers listed

1/8 inch

27 / 40

What action should you take before driving while drowsy?

open your vehicle windows for some fresh air

drink a cup of coffee

drink energy drinks

pull off the road and get some sleep

28 / 40

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

none of these answers are correct

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

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

29 / 40

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

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

All answers listed.

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

Larger / heavier vehicles generally take longer to stop.

30 / 40

What do yo need to do before supplying air to the air tanks of the second trailer?

close the shut off valves at the back of the first and second trailer

open the shut off valves at the back of the first and second trailer

close the shut off valves at the back of the second trailer and open the shut off valves at the back of the first trailer

open the shut off valves at the back of the second trailer and close the shut off valves at the back of the first trailer

31 / 40

A truck with baffles will handle:

With less front to back surge compared to trailers without baffles.

None of the answers listed.

The same as a tanker with no baffles.

Heavier that it actually is.

32 / 40

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

The liquid may leak out of the tank.

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

The trailer may slide into the oncoming traffic.

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

33 / 40

With most hazardous materials, you may park within 5 feet of the road briefly, if your work requires it. The materials that are the exception and do not allow parking this close to the road are:

Corrosives and oxidizers

Liquids

Explosives A and B

Acids and poisons

34 / 40

Select the first action to do when the low air pressure warning comes on:

release the supply control valve

come to a stop and safely park as soon as possible

shift into a higher gear

adjust the engine brake

35 / 40

Which of the following statements about bus evacuation is true?

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

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

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

If time allows, notify the police.

36 / 40

The brake pushrod should not move more than____for manual slack adjusters.

1-2 inches while the brakes are set

an inch when pulled by hand with the brakes released

checking is not required in vehicles built after 1994 as they have automatic slack adjusters

movement is not allowed

37 / 40

You must control how far packages labeled "Radioactive II" or "Radioactive III" are located from people and cargo space walls by referring to:

The segregation and separation chart.

The table of hazardous materials.

The list of hazardous materials and reportable quantities.

The transport index and the separation distances table.

38 / 40

Where are shut-off valves located?

at the back of the trailer

either at the front or the back of the trailer

at the front of the trailer

at the front and back of the trailer

39 / 40

It is good practice to_____when uncoupling.

have the glad hands coupled to the dummy couplers

all answers are appropriate

have the glad hands coupled together

make sure the electrical cable is hanging with the plug end down

40 / 40

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

Whenever you enter a tunnel

For fresh air

Never

First day of spring

Your score is

The average score is 0%

5/5 - (2 votes)

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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