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

Your bus starts to lean toward the outside on a banked curve, you are:

2 / 40

The best way to describe a dual air brake system is:

3 / 40

Shifting into a lower gear and removing your foot off of the accelerator to slow your vehicle is known as?

4 / 40

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

5 / 40

You should brake on a long steep downgrade hill as a supplement to the braking effects of the engine

6 / 40

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

7 / 40

Select the part that is not a part of the drum brake:

8 / 40

Commerical vehicles typically have this type of brake.

9 / 40

Which of the following is a reason that shippers package material?

10 / 40

How many seats may be placed in the aisle if the bus is a charter and is carrying agricultural (farm) workers?

11 / 40

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

12 / 40

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

13 / 40

Select the factor that has no effect on how much liquid you can carry:

14 / 40

When there is a hazardous materials emergency. You should:

15 / 40

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

16 / 40

Which of the following is not a prohibited practice on the bus:

17 / 40

Air brake systems should not lose air faster than____when testing for air leakage rates in combination vehicles before applying the brake pedal.

18 / 40

When transporting hazardous waste, you must:

19 / 40

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

20 / 40

Do you need to stop before a railroad crossing if you are hauling 100 pounds of Division 4.3 materials?

21 / 40

Where are the two main places where the hazardous material identification number appears?

22 / 40

Where should the safety catch for the fifth wheel locking lever be located for coupling to be complete?

23 / 40

How do you check the connection after locking the kingpin into the fifth wheel?

24 / 40

What is a supply pressure gauge used for?

25 / 40

An example of a low pressure warning signal for air brakes is:

26 / 40

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

27 / 40

Which of the following factors is NOT used to determine your safe speed when going down a long steep downgrade?

28 / 40

This object releases the fifth wheel locking jaw to allow uncoupling.

29 / 40

What does the service brake system do?

30 / 40

What gauge on the dashboard indicates electrical system charging rate?

31 / 40

The minimum tire tread depth for front tires is:

32 / 40

What are the three types of emergency equipment that you must have with your vehicle?

33 / 40

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

34 / 40

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

35 / 40

Surge affects the handling of a tanker by:

36 / 40

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

37 / 40

The driver's manual advises you to disconnect the steering axle brake to keep the rig straight:

38 / 40

You should back up slowly until____when coupling the trailer.

39 / 40

The emergency air line is _____and the service air line is____.

40 / 40

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

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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.