Free Oregon CDL practice test with real commercial driving questions. Prepare for your Oregon CDL exam — General Knowledge, Air Brakes, HazMat, and all endorsements. Updated for 2026.
The Oregon DMV CDL knowledge test has 50 questions for General Knowledge, with additional 20–30 question tests for each endorsement (Air Brakes, HazMat, Tanker, etc.). You need 80% to pass each section. Oregon's 35-question test covers both state-specific laws and standard road rules at DMV offices.
The Oregon DMV knowledge exam tests your understanding of Oregon traffic laws, road signs, and safe driving practices. DriveAce covers every topic you'll encounter on test day.
Vehicle inspection, cargo management, driving techniques, and documentation for Oregon CDL.
Air brake system components, inspection, emergency stops, and maintenance tested by the Oregon DMV.
Hazardous materials classification, placarding, loading/unloading rules for Oregon CDL endorsement.
Liquid surge, rollover prevention, loading and unloading procedures for Oregon tanker endorsement.
Coupling, uncoupling, stability, and safe driving with multiple trailers under Oregon CDL rules.
Passenger safety, school bus operations, railroad crossings, evacuation for Oregon CDL.
The Oregon DMV CDL General Knowledge test has 50 questions. You need 80% (40 correct) to pass. Each CDL endorsement — Air Brakes, HazMat, Tanker, Doubles/Triples, Passenger, School Bus — has an additional 20–30 question test, each also requiring 80%.
DriveAce covers all major Oregon CDL endorsements: General Knowledge, Air Brakes, HazMat (Hazardous Materials), Tanker Vehicles, Doubles/Triples, Passenger Vehicles, and School Bus. All practice questions are based on Oregon DMV CDL requirements.
Yes — DriveAce offers free CDL practice questions for Oregon. Study General Knowledge and endorsement-specific questions that mirror the real Oregon DMV CDL exam. Full access to all practice questions is available for a one-time $19.99 fee.
You need to score 80% on the Oregon CDL General Knowledge test and each endorsement test. DriveAce practice tests use the same 80% passing threshold, so you always know when you're ready for the real exam at the Oregon DMV.
Join thousands of drivers who passed their Oregon CDL exam on the first try with DriveAce. No subscription. No ads. Just the knowledge you need.
Start Free Practice Test →$19.99 one-time for full access. 20 free questions included.