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 this item is missing or loose, movement may occur between the fifth wheel assembly and the frame.

Locking jaw

Tandem release arm

Locking pins

Lug nuts

2 / 40

What does the service brake system do?

they are part of an official vehicle inspection

they are only on vehicles that have hydraulic brakes

under normal driving it applies and releases the brakes by using the brake pedal

they are valves that maintain air tank pressure

3 / 40

Which of the following is NOT a part of the steering system?

steering knuckle

main spring

tie rod

hydraulic fluid reservoir

4 / 40

When accelerating:

speed up smoothly and gradually and avoid jerking

always use the parking brake to slow down

"hammer down" when your wheels start to spin

do not engage the clutch before you take your foot off the brake

5 / 40

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

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

all answers listed

it is controlled by the foot brake and carries air

it is controlled by the trailer hand brake and carries air

6 / 40

You should adjust all the outside left and right side flat mirrors to see:

The children's exit path out of the main bus door.

The entire area to the rear of the mirror along the side of the bus.

The rear right and left tires touching the ground as well as 200 feet behind the bus.

The passenger area inside the bus.

7 / 40

If students must cross the street, when they get off the bus, which statement is true?

For crossing, students should make eye contact with the bus driver and wait for the driver's signal that it is safe to proceed.

If the bus is equipped with the crossing gate, the danger of running over the child is eliminated.

The student should wait to cross the street until the bus continues on its route.

When the driver signals that it is safe to proceed, the students must run across the street to reduce the exposure to danger.

8 / 40

Select the true statement in regards to crossing your air lines on a new trailer with spring brakes

there is no way to know if there is an issue

you will have brakes that are not operational

you will be unable to realse the trailer brakes

you will be unable to release the tractor brakes

9 / 40

Which of the following must be closed while the bus is in motion?

Roof vents

Both hatches

Emergency windows

Windows

10 / 40

Which seats not securely fastened to the bus are usually allowed?

The driver's seat only.

Window seats.

None of these answers are correct.

Any of the last row seats.

11 / 40

You should check your mirrors while making a lane change:

all answers listed

after you have completed the lane change

after you signal your intent to change lanes

right after you start the lane change

12 / 40

The reason a bulk liquid tanker is hard to handle is:

Because the cargo has a high density.

Because the cargo has a low center of gravity.

Because of the high friction point.

Because the cargo has a high center of gravity.

13 / 40

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

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

in a closed position

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

in an open position

14 / 40

The basic description of a hazardous material includes the hazard class, the identification number, and the proper shipping name. Which one must appear first on the shipping paper?

The proper shipping name.

The hazard class.

The box number.

The identification number.

15 / 40

Which of the following three hazard classes should NOT be placed into a temperature-controlled trailer (one with a heater/air conditioner unit)?

Classes 1, 3, and 6

Classes 1, 4, and 51

Classes 1, 21, and 3

Classes 1, 3, and 4

16 / 40

Which two special conditions indicate that you should downshift?

starting up a hill and finishing a curve

starting down a hill and entering a curve

starting up a hill and entering a curve

starting down a hill and finishing a curve

17 / 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

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

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

18 / 40

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

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

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

19 / 40

A vehicle placarded for Division 1.1, 1.2, or 1.3 explosives:

May not be parked on the cosignee's property.

May never be left unattended under any condition.

May be left unattended in a safe haven.

May never be parked on private property.

20 / 40

What is the minimum amount of distance you should maintain when driving at 50 mph in ideal conditions with a 100 ft twin trailer combination?

8 seconds

6 seconds

11 seconds

13 seconds

21 / 40

What is the earliest way to notice a trailer skid?

you can hear the tires squealing

you can feel a jerk in the back of the tractor

you can see it in your mirrors

you can feel it pulling your steering wheel

22 / 40

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

Yellow ii indicates the highest level of radioactivity.

White i indicates the highest level of radioactivity.

Yellow iii indicates the highest level of radioactivity.

Black iii indicates the highest level of radioactivity.

23 / 40

There must be a hazardous materials identification number on the ______ and on the ______.

package, trailer

shipping papers, package

invoice, shipping papers

trailer, packages

24 / 40

Select the true statement in regards to managing the space to the sides:

high wind gusts will not cause any issues for doubles or triples

you should drive down the center of both lanes over the pavement markings

you should try to avoid driving next to others when possible

you should always keep your vehicle to the right side of the lane

25 / 40

What is the purpose of cladding in a tanker?

It eliminates liquid surge.

It protects the tanker form any corrosive cargo.

It protects the cargo from changes in temperature.

It controls the temperature of the cargo.

26 / 40

The baffles in a tank trailer help to control:

The distrubition of weight.

The flow of liquid side to side.

The movement of liquid from front to back.

The overall weight of the vehicle.

27 / 40

Puddles or dripping fluids from the underside of the transmission and engine may indicate:

Problems with the water pump

A leak from the engine

A leaking line or hose

All of these answers are correct

28 / 40

How far away are you required to park from a bridge, tunnel, or building if you are carrying Division 1.2 or 1.3 materials?

At least 600 feet

At least 300 feet

At least 500 feet

At least 400 feet

29 / 40

Select the true statement in regards to large combination vehicles taking longer to stop.

they take longer to stop when they are empty

they take longer to stop than bobtail tractors

they take the same amount of time to stop when empty or loaded

they take longer to stop when loaded down

30 / 40

Which of these statements about speed management and braking is true?

The total stopping distance of a bus is the distance it takes to stop once the brakes are applied.

You need about four times as much stopping distance at 40 mph as at 20 mph.

The posted speed limit will always allow you to stop safely.

Stopping time increases by one second for each 10 mph over 20 mph.

31 / 40

In column 1, the "D" symbol means:

Devices

Domestic transportation

Detonators

Domestic restrictions

32 / 40

Which of the following would NOT be part of a standard vehicle inspection?

steering system defects

bad brake drums or shoes

tire problems

seating defects

33 / 40

Select the true statement about dual air brake systems:

they require less time to build up air pressure

they have a single set of air tanks and hoses

they have one set of controls for two air brake systems

they are required to have two warning alarms

34 / 40

Which is more likely to tip over due to the crack the whip effect?

a fully loaded trailer behind the tractor

any trailer

the last trailer of a double

the last trailer of a triple

35 / 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

only at the end of a shift

false

true

36 / 40

You must have placards for explosives, poison gas or flammables exceeding:

Any amount

10 pounds

10 cartons

100 pounds

37 / 40

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

signal when you want to change lanes

signal before you exit

signal just before you start to make a turn

signal when you are merging into traffic

38 / 40

A drawbridge does not have a traffic light showing green or a traffic control attendant. How many feet before the draw of a bridge must a bus driver stop?

At least 25 feet.

At least 50 feet.

At least 100 feet.

At least 75 feet.

39 / 40

What are the three hazard classes should NOT be loaded into a trailer that has a heater air conditioner unit?

None of these answers are correct.

Class 1 explosives, class 8 corrosives, and division 5 oxidizers.

Class 1 explosives, class 3 flammable liquids, and division 21 flammable gas.

Class 2 explosives, class 3 flammable solids, and division 21 inhalation hazard.

40 / 40

Which of the following statements about overhead space is true?

an empty van is lower than a loaded one

the heights posted at bridges are usually accurate

the weight of the cargo changes a truck's height

warning lights are always installed on low bridges and overpasses

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