Oregon CDL practice test
Published Updated Licensing sources checked:
How do I prepare for the Oregon CDL knowledge test?
If you are preparing for your first permit, start with general knowledge and the official Oregon instructions below. If your vehicle needs air brakes or combination vehicles, add those federal study sets; for hazardous materials, use the separate hazmat set. Compare the state’s published test rules with its current manual before you test. These practice sets teach federal topics and do not copy the state exam.
This page is study material. It is not the Oregon state exam, and it does not copy state test questions. Check the official Oregon pages below before you test.
| Your situation | Start with… |
|---|---|
| A quick first try | Take a 10-question warm-up |
| Ready for a longer attempt | Take the 50-question general knowledge exam |
| Need state rules or documents | Check the Oregon application steps |
Oregon official CDL manual (PDF) — link checked . Study its rules alongside our federal-standard bank. Our 50-question exam length is a study setting; use the official counts below for Oregon.
Oregon DMV’s manual and application page describe the knowledge tests below. ODOT’s Title VI FMCSA supplement prints an 80 percent minimum passing score for commercial knowledge tests. The testing sections checked November 12, 2026 do not print question counts; our federal practice lengths are study settings, not Oregon exam lengths.
Which tests do I need in Oregon?
| Your vehicle or work | Required study and tests |
|---|---|
| All permit applicants | Start with general knowledge. Official requirements. Federal warm-up · Federal exam mode |
| Class A combination vehicle | Add combination vehicles. Official requirements. Federal warm-up · Federal exam mode |
| Vehicle with air brakes | Add air brakes and check restriction rules. Official requirements. Federal warm-up · Federal exam mode |
| Passenger vehicle | Add passenger testing. Official requirements. Federal warm-up · Federal exam mode |
| School bus | Study school bus and passenger topics; check state requirements. Official requirements. Federal warm-up · Federal exam mode |
| Tank vehicle | Add tank vehicle testing. Official requirements. Federal warm-up · Federal exam mode |
| Hazardous materials | Add hazmat testing and check approval and training steps. Official requirements. Federal warm-up · Federal exam mode |
| Doubles or triples | Add doubles and triples testing; check vehicle limits. Official requirements. Federal warm-up · Federal exam mode |
Check the current Oregon agency instructions for your vehicle, endorsements and application. Our federal study sets do not copy state exam questions or supply unprinted exam figures.
Before booking the exam, check Oregon CDL application steps and official fee lines.
| Test | Questions | To pass | Official source |
|---|---|---|---|
| General knowledge | Not printed on the pages checked | 80 percent | State sourceState sourceState source |
| Combination vehicles, for Class A | Not printed on the pages checked | 80 percent | State sourceState sourceState source |
| Air brakes, if applicable | Not printed on the pages checked | 80 percent | State sourceState sourceState source |
| Passenger | Not printed on the pages checked | 80 percent | State sourceState sourceState source |
| Tank vehicle | Not printed on the pages checked | 80 percent | State sourceState sourceState source |
| School bus | Not printed on the pages checked | 80 percent | State sourceState sourceState source |
| Hazardous materials | Not printed on the pages checked | 80 percent | State sourceState sourceState source |
| Doubles and triples | Not printed on the pages checked | 80 percent | State sourceState sourceState source |
Oregon language, permit and booking notes — checked 2026-11-12
The CDL fee schedule lists $10 for a commercial knowledge test and $40 for an original commercial learner permit. These are separate charges, not a full CDL application total. The manual says a test fee is due for each attempt. Official sourceOfficial source — checked .
DMV offers commercial knowledge tests in English only and does not allow translators. Passed knowledge-test results are valid for six months; applicants must finish the CLP application requirements within that period or take the tests again. Official source — checked .
The third-party testing page requires a CLP issued at least 14 days before skills testing. It also requires scheduling the skills test at least 48 hours ahead and completing applicable entry-level driver training. Official source — checked .
DMV requires entry-level driver training before scheduling applicable CDL skills tests and before taking the knowledge test for a first hazardous-materials endorsement. Hazmat and doubles/triples endorsements cannot be added to a CLP. Official source — checked .
For unknown figures, check with the Oregon licensing agency. A blank count is not an estimate.
Federal study sets, not the Oregon exam
Use general knowledge, air brakes, combination vehicles, and hazmat to study the federal topics. Finishing one of those sets does not mean you passed the Oregon test.
Sources
- Oregon DMV: Commercial Driver Manual, Oregon Information and section 1.1.1 — checked
- Oregon DMV: getting a CDL or CLP and commercial knowledge testing — checked
- ODOT: Title VI FMCSA supplement, CDL program, printed page 7 — checked
- Oregon DMV: third-party CDL testing — checked
- Oregon DMV: commercial driver license fees — checked