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Oregon CDL General Knowledge

The CDL General Knowledge test is the foundation of your commercial driver’s license. Every CDL applicant must pass this section regardless of the class of license or endorsements sought. This catego…

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What is the minimum age to obtain a Commercial Driver License (CDL) for intrastate driving in Oregon?

On the Oregon driving test, cdl general knowledge questions are part of the 35-question exam. Oregon requires a score of 80% (28 correct answers) to pass.

The CDL General Knowledge test is the foundation of your commercial driver’s license. Every CDL applicant must pass this section regardless of the class of license or endorsements sought.

This category covers vehicle operation fundamentals for large commercial vehicles: proper documentation (medical certificates, logbooks, shipping papers), vehicle inspection requirements, basic control of large vehicles, and understanding the responsibilities that come with operating commercial motor vehicles on public roads.

You’ll also need to understand hours-of-service regulations, cargo securement basics, and the Federal Motor Carrier Safety Regulations (FMCSRs) that govern all CDL holders. Expect questions on accident reporting procedures and the consequences of violations.

Key Topics

  • CDL classifications (A, B, C)
  • Required documents and logbooks
  • Hours-of-service regulations
  • Federal Motor Carrier Safety rules
  • Accident reporting procedures
CDL General Knowledge — Oregon Study Guide (2026) | DMV IQ