Oregon CDL Written Test — Questions, Cost & Study Tips (2026)

Studying for your Oregon CDL written exam? Here is what applicants typically need to know before visiting Oregon DMV.

How many questions on the Oregon CDL test?

Oregon general knowledge written exams commonly include about 50 multiple-choice questions for the core CDL knowledge test. Endorsements such as air brakes, combination vehicles, hazmat, and passenger are separate written tests if your license class requires them.

PassCDL mirrors this structure: start with general knowledge, then add endorsement practice for the tests you need.

Oregon CDL test cost (approximate)

Written exam fees at Oregon DMV are typically $25–$40 per attempt (varies by office and endorsement). Failing and retesting can cost more than a month of PassCDL Pro — many students prefer unlimited practice before test day.

Oregon study tip

Oregon DMV CDL applicants take knowledge tests for each license class and endorsement at DMV offices.

Free OR CDL practice test

Use our Oregon CDL practice test for scored questions and explanations. PassCDL Pro adds full exam simulations, all endorsements, and unlimited retakes.

See also: How many questions on the CDL test? · CDL general knowledge study guide

Educational practice only — not affiliated with Oregon DMV or any state DMV.