Free Washington CDL practice test with real commercial driving questions. Prepare for your Washington CDL exam — General Knowledge, Air Brakes, HazMat, and all endorsements. Updated for 2026.
The Washington DOL 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. Washington's DOL requires 32 of 40 correct answers and administers tests at licensing offices statewide.
The Washington DOL knowledge exam tests your understanding of Washington 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 Washington CDL.
Air brake system components, inspection, emergency stops, and maintenance tested by the Washington DOL.
Hazardous materials classification, placarding, loading/unloading rules for Washington CDL endorsement.
Liquid surge, rollover prevention, loading and unloading procedures for Washington tanker endorsement.
Coupling, uncoupling, stability, and safe driving with multiple trailers under Washington CDL rules.
Passenger safety, school bus operations, railroad crossings, evacuation for Washington CDL.
The Washington DOL 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 Washington CDL endorsements: General Knowledge, Air Brakes, HazMat (Hazardous Materials), Tanker Vehicles, Doubles/Triples, Passenger Vehicles, and School Bus. All practice questions are based on Washington DOL CDL requirements.
Yes — DriveAce offers free CDL practice questions for Washington. Study General Knowledge and endorsement-specific questions that mirror the real Washington DOL CDL exam. Full access to all practice questions is available for a one-time $19.99 fee.
You need to score 80% on the Washington 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 Washington DOL.
Join thousands of drivers who passed their Washington 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.