Oregon CDL practice tests

Oregon's driver licensing agency is officially called Driver and Motor Vehicle Services, run as a division of the Oregon Department of Transportation rather than as a stand-alone department. Most people just call it the DMV, but it sits inside ODOT the same way some states fold licensing into their transportation department rather than running it separately — worth knowing before you go looking for a motor vehicle agency that does not exist here under its own name.

What Oregon requires

Every figure below names the document it came from, so you can check it rather than take our word for it.

Passing score
80% 49 CFR Part 383, Commercial Driver's License Standards, 383.135
Minimum age (in-state driving)
18 years old 49 CFR Part 383, Commercial Driver's License Standards, 383.71
Minimum age (across state lines)
21 years old 49 CFR Part 391, Qualifications of Drivers, 391.11
Permit holding period
14 days 49 CFR Part 383, Commercial Driver's License Standards, 383.25

Fees change without notice, so we do not repeat them here. Check Oregon Driver and Motor Vehicle Services for the current cost.

Oregon practice tests

The knowledge tests are set by federal rule, so the questions are the same wherever you sit them. What changes is the paperwork above.

A state that changes a lot in a short drive

Oregon's geography is not uniform, and that affects where testing offices are and how busy they are. The Willamette Valley, running from Portland down to Eugene, holds most of the state's population and most of its DMV offices. East of the Cascades the land opens into high desert with far fewer people and far fewer offices, so a test slot there can mean a longer drive than the map distance suggests. West of the mountains, timber and log-hauling still support a meaningful share of commercial trucking work, which is a different freight mix from states built around ports or interstate through-traffic.

The exam content is set nationally

What is on the exam does not depend on any of that. The knowledge tests, the pass mark and the age limits come from 49 CFR Part 383 and are identical in every state. Passing a section needs 80 percent correct — a federal minimum, not something Oregon decided on its own. You can drive commercially inside Oregon from 18; work that crosses into Washington, California, Idaho or Nevada needs you to be 21.

Which tests you actually need

General knowledge is required of every applicant regardless of vehicle type. From there, what you need depends on what you drive. An air brakes failure does not cost you the license — it adds a restriction that rules out anything built with them, which is worth knowing if the trucking work in your part of the state leans toward older equipment. Trailers heavier than ten thousand pounds bring the combination vehicles exam into the mix. The endorsements follow last, each one only if your work needs it: tank, doubles and triples, hazardous materials, passenger, school bus.

Hazardous materials adds a Transportation Security Administration background check on top of the written exam. That check runs on a federal timeline you cannot shorten, so start it well before you plan to need the endorsement.

Before you book

No skills test happens without a commercial learner permit in hand first, and federal rule sets a 14-day minimum hold on that permit before the skills test can be booked. It is worth sitting the knowledge exams as soon as the permit arrives, since a failed section is easy to fix early and much harder to fix with the skills test date closing in.

Fees do not appear anywhere on this site. Oregon's DMV reviews and adjusts them from time to time, and a figure printed here could be out of date before you use it, so treat their office as the source of truth on cost, not us. Our focus stays narrow: which questions the exams draw from, and the exact source behind each answer.

Jump to a test

Every question on every one of these is free, and each answer names the handbook page it came from.

Other states

Cited to the page, every time.

Every question names the handbook, section and page it was read from, so you can check the answer instead of taking our word for it.

How we write these