Oregon CDL practice test

Getting a commercial driver's licence in Oregon starts with the CDL knowledge tests. The content is federal: every state, Oregon included, writes its tests from the FMCSA CDL manual, so the general knowledge test has 50 questions, the endorsement tests have 20 to 30, and the passing score is 80% on each. Oregon Driver and Motor Vehicle Services administers the test; the rules behind it are published by the FMCSA. Try the free Oregon CDL practice questions below, then pick a full test.

50general knowledge questions
80%passing score on every test
8knowledge tests covered
ORpick your state once in the app

Free Oregon CDL practice quiz

Five questions from the general knowledge, air brakes and combination vehicles banks, the three tests most Oregon Class A applicants take first. Tap an answer to see if you were right and read the explanation.

0 of 5 right0 of 5 answered

On a truck with air brakes, the parking brake control is usually:
The modulating control valve found on some vehicles lets you:
A separate air tank connected to a 'dual parking control valve' is used to:
Antilock brakes (ABS) have been required on truck tractors with air brakes built on or after:
Does ABS shorten your stopping distance?

Every CDL test for Oregon drivers

Each page has a free ten-question quiz, the real question count, the 80% pass mark and what the test covers.

How the Oregon CDL knowledge test works

You take the general knowledge test first; it is required for every CDL class. Class A drivers add the combination vehicles test. Almost everyone takes the air brakes test, because skipping it puts an air brake restriction on the licence. Endorsements (hazmat, tanker, doubles/triples, passenger, school bus) each have their own knowledge test. Pass the tests and you hold a commercial learner's permit; the skills test in a truck comes later.

Fees, appointment rules and test centre locations are set by Oregon; the current ones from Oregon DMV are in the next section. What does not change is the content, and that is what PassRig drills.

Oregon CDL fees and rules

In Oregon the CDL is issued by the Oregon Driver and Motor Vehicle Services. The figures below are taken from its own pages and were last checked on 2 November 2026. Fees and rules change, so confirm with the agency before you go.

Study from the state's own book: Oregon Commercial Driver Manual. PassRig's questions are written from the same FMCSA manual it is based on.

What	OR	Source
Learner's permit fee	$40.00	oregon.gov
CDL fee	$160.00 (upgrade of an existing Oregon driver licence)	oregon.gov
Knowledge test fee	$10.00	oregon.gov
Retest fee	Full test fee charged each time you take the test	oregon.gov
Permit valid for	1 year	oregon.gov
Minimum age	21, or 18 for intrastate driving	oregon.gov
Appointment	All DMV offices offer commercial knowledge testing; an appointment is optional	oregon.gov
If you fail	Can retake as early as the same day	oregon.gov
Test languages	English only; translators not permitted	oregon.gov
Medical certificate	DOT medical exam by an examiner on the National Registry of Certified Medical Examiners	oregon.gov
Entry-level driver training	Must be completed with a Training Provider Registry provider before scheduling the skills test	oregon.gov
Also worth knowing	CDL skills tests must be scheduled at least 48 hours in advance	oregon.gov

4 official pages from Oregon DMV were read for this section. Nothing on it is estimated.

Oregon CDL test questions

How many questions are on the Oregon CDL test?

The Oregon CDL general knowledge test follows the federal model: 50 questions, 40 correct to pass. Endorsement tests are shorter: air brakes 25, hazmat 30, and combination vehicles, tanker, doubles/triples, passenger and school bus 20 each.

What is the passing score on the Oregon CDL permit test?

80% on every knowledge test, the same pass mark used across the United States.

Where do I take the CDL knowledge test in Oregon?

Oregon Driver and Motor Vehicle Services gives the test. All DMV offices offer commercial knowledge testing; an appointment is optional The test content itself comes from the FMCSA CDL manual.

How much does a CDL permit cost in Oregon?

Oregon DMV lists the commercial learner's permit fee as $40.00. If you fail a knowledge test: Can retake as early as the same day

Does PassRig have Oregon CDL practice questions?

Yes. Pick Oregon in the app and you get practice sets and mock exams built from the knowledge test content your state uses, with the real counts and the 80% line.