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Washington · Permit test

Washington CDL permit test

The Washington CDL general knowledge test has 50 questions and you need 40 right. Pass it, plus any endorsement tests you need, and you can get a commercial learner permit (CLP) for $40, as of October 2026. You must be 18 with a valid Washington driver license, or 21 to drive commercial vehicles across state lines.

Free practice test

Updated October 2026 · Written from official sources, listed at the bottom of this page

CDL knowledge tests

TestQuestionsTo pass
General knowledge (A, B, C)5040
Combination (A)2016
Passenger2016
Air brakes2520
School bus2016
Double/triple2016
Tank vehicle2016
Hazardous materials3024

Steps to a CDL

  1. Book a driver licensing office that offers CDL knowledge testing. Bring your license, Social Security number and proof of US citizenship or lawful permanent residency.
  2. Self-certify the type of driving you'll do and get a DOT physical.
  3. Pass the knowledge tests for your class and endorsements. Hazmat training must be on record before the hazmat test.
  4. Get your CLP, then complete the training required for your CDL type.
  5. Wait at least 14 days after getting your CLP, then call DOL to book and pay for the skills test.
  6. Pass the skills test and book an office visit to get your CDL.

Fees and time limits

  • CDL knowledge test: $35. CLP: $40. Skills test: $175, which covers 2 attempts.
  • Knowledge test scores are valid for 180 days. A CLP lasts 180 days and can be renewed once.
  • On a CLP, a CDL holder with the right endorsements, 2 years in that type of vehicle and 5 years of driving must sit beside you.
  • Tests come in English, Spanish, Russian and Serbo-Croatian. Interpreters aren't allowed.
  • As of October 2026, DOL has stopped all non-domicile CLP and CDL transactions and testing.

Practice and study

DOL has a free 20-question CDL practice test modeled on the real knowledge test, and the Commercial Driver Guide, in English only. Chapter 1 of the guide has a table showing which sections to study for each license and endorsement.

DOL CDL practice test ↗Commercial driver guides ↗

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OverviewWashington permit testOnline testCan you take the Washington permit test online?Drive testThe Washington drive testDriver's licenseGetting a Washington driver's licenseLearner permitHow to get a Washington learner permitIntermediate licenseWashington intermediate license rulesDrivers edDrivers ed in WashingtonMotorcycleWashington motorcycle permit testOther languagesTaking the Washington knowledge test in another languageAge rulesDriving age in WashingtonDriver GuideThe Washington Driver GuidePractice testWashington permit practice testWhere to learnHow to study for the Washington knowledge test
Sources: Washington DOL and 4 more. Checked October 2026.

Rules and fees can change, so check the official site before your test.