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The CDL general knowledge test is required to be taken by all CDL applicants. The Oregon CDL test consists of 50 questions. To pass, you must correctly answer at least 40 questions (80%). The general knowledge test covers the contents of the Oregon CDL Manual.
All CDL applicants (Class A, B and C) must study the following sections: Driving Safely, Transporting Cargo Safely, Air Brakes (if you plan to operate vehicles equipped with air brakes), Vehicle Inspection Test, Basic Control Skills Test, Road Test. In addition, the Class A CDL test will include questions based on the Combination Vehicles section. Take this CDL practice test now to prepare for the actual OR general knowledge test!
To get your CDL, you must pass both the knowledge and skills tests. CDL knowledge tests include: General Knowledge, Passenger Transport, Air Brakes, Combination Vehicles, Hazardous Materials, Tanker Vehicles, Doubles/Triples, School Bus, Firefighter. Depending on what class of license (A, B or C) and endorsements you need, you must take one or more knowledge tests. A special endorsement is also required to drive certain types of vehicles. The following endorsements may be used with a Class A, B or C CDL: HazMat (H), Tank Vehicles (N), Tank Vehicles Transporting Hazardous Materials (X) and Passenger Transport (P). The School Bus endorsement (S) is only available for Class A or B CDL, and the Doubles/Triples endorsement (T) is only available for Class A driver's licenses.
1.
To test your hydraulic brakes for leaks:
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apply firm pressure to the brakes for five seconds, then pump them three times.
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turn off the engine and and listen for leaks.
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pump the brake pedal three times, then hold it down for five seconds.
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None of the above.
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2.
Brakes out of adjustment can cause the other brakes to:
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overheat and fade.
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work better.
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last longer.
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apply more braking power.
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3.
When you get in the vehicle and start the engine, you should:
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put the gearshift in neutral (or park if automatic) before starting the engine.
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make sure the parking brake is on before starting the engine.
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listen for unusual noises after starting the engine.
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All of the above.
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4.
If a tire fails while you are driving, you should:
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call your supervisor for instructions.
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stay off the brake
until your vehicle has slowed down.
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stop on the roadway if possible.
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brake as hard as possible.
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5.
Which of the following is NOT a type of retarder?
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Electric
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Hydraulic
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Anti-lock
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Engine
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6.
To prevent rolling back when you start, if you have a manual transmission you should:
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partly engage the clutch before you take your right foot off the brake.
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use the lowest reverse gear.
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over-accelerate.
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never the parking brake.
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7.
Which of these statements is correct?
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Others could be hurt or killed by cargo that falls off a vehicle.
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Loose cargo that falls off a vehicle can cause traffic problems.
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Loose cargo can hurt the driver during a quick stop.
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All of the above.
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8.
If you feel drowsy while driving, you should:
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get some coffee.
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pull off the road and get some rest.
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fall asleep.
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stop yawning.
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9.
When starting your vehicle, oil pressure should come up to normal:
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within 5 minutes of driving.
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in about a minute.
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within seconds.
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in about two minutes.
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10.
An anti-lock braking system (ABS):
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helps you avoid wheel lock up.
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should help you steer around an obstacle while braking.
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helps you avoid skids caused by over braking.
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All of the above.
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Frequently Asked Questions
In Oregon, individuals aged 15, 16, and 17 can obtain a provisional instruction permit. If you're between 16 and 17, you become eligible for a provisional driver license after holding an instruction permit for a period of 6 months. When you turn 18, you can obtain a full driver license (class C).
You can take the DMV written test online using a computer (mobile phones or tablets are not permitted). If you are under 18, it's necessary to have the supervision of an adult aged 21 or older, who possesses a social security number and has not proctored more than five tests in the last year. Alternatively, you can visit an Oregon DMV office as a walk-in or schedule an appointment for the permit test.
Ensure you prepare these documents when applying for a driver’s license:
- Proof of legal presence, identity, and date of birth.
- Proof of residence address (two documents for Real ID).
- Parent/Guardian certification form signed by your parent/guardian if they cannot accompany you to the office (for those over 18 or minors married or emancipated, this is not required).
- Proof that you are attending high school or your diploma/GED certificate (for those under 18).
You can start the pre-application online and bring the required documents when you go to the DMV office.
The online DMV written test is offered in English and Spanish. If taken in a DMV office, it's available in English, Spanish, Arabic, Chinese, Japanese, Korean, Russian, and Vietnamese. You can also use a paper foreign language translation dictionary with permission, and audio assistance is additionally provided.
To prepare for the DMV written test, read the Oregon Driver's Handbook or listen to the audio version available in English and Spanish. Study road signs, safe driving practices, and traffic laws. You can test your knowledge with our free practice tests. Once you are satisfied with your score, you are ready for the exam.
The DMV written test consists of 35 multiple-choice questions covering topics such as traffic signs, parallel parking, turning, passing a vehicle, yielding the right of way, etc. Read the manual carefully because it's not permitted to use it or any notes during the official test. If you want to test your preparation, sign up for DMV Premium!
You are allowed up to 7 wrong answers. This means that the passing score is 80%. It's important to stay focused during the exam and take the time to read the questions carefully to minimize errors and pass on the first attempt.
For new drivers in Oregon, specific restrictions apply based on their age and licensing stage.
Instruction permit’s restrictions:
- You can drive only if accompanied by a licensed adult who is at least 21 and seated beside you.
- Using a cell phone or other mobile device is prohibited.
Provisional driver license’s restrictions (until you turn 18 or have had your provisional license for 1 year):
- For the first six months...
- You cannot drive with passengers under 20, except for family members or when supervised by an instructor, parent, or guardian with a license.
- Driving between midnight and 5:00 AM is forbidden, except for work, school events, or when supervised by a licensed driver aged at least 25.
- During the second six months...
- You can drive with a maximum of three passengers under 20, except for family members or when supervised by an instructor, parent, or guardian with a license.
- Driving between midnight and 5:00 AM is forbidden, except for work, school events, or when supervised by a licensed driver aged at least 25.
- Using a cell phone or other mobile device is prohibited until you turn 18.
An Oregon instruction permit is valid for 2 years. If it expires, you can apply for a new one, which remains valid for 24 months. No vision or knowledge tests are required unless the permit has expired for 1 year or more. To renew the permit a fee is required and you have two options:
- Renew it online and receive an online receipt to use as proof of your driving privileges until your license is mailed to your address.
- Schedule an appointment at a DMV office and receive an interim card as proof of valid driving privileges until your license is mailed to your address.
If you don't pass your DMV written test, a waiting period of at least one day is required before you can retake it. After four unsuccessful attempts, you have to wait at least 28 days. For individuals who have taken the permit test online, any further attempts beyond the fourth must be made at a DMV office. If you are caught cheating, you will automatically fail, and you can retake the exam after 90 days.