Free Wisconsin CDL practice test with real commercial driving questions. Prepare for your Wisconsin CDL exam — General Knowledge, Air Brakes, HazMat, and all endorsements. Updated for 2026.
The Wisconsin 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. Wisconsin's 50-question test requires 40 correct answers at DOT service centers statewide.
The Wisconsin DMV knowledge exam tests your understanding of Wisconsin 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 Wisconsin CDL.
Air brake system components, inspection, emergency stops, and maintenance tested by the Wisconsin DMV.
Hazardous materials classification, placarding, loading/unloading rules for Wisconsin CDL endorsement.
Liquid surge, rollover prevention, loading and unloading procedures for Wisconsin tanker endorsement.
Coupling, uncoupling, stability, and safe driving with multiple trailers under Wisconsin CDL rules.
Passenger safety, school bus operations, railroad crossings, evacuation for Wisconsin CDL.
The Wisconsin 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 Wisconsin CDL endorsements: General Knowledge, Air Brakes, HazMat (Hazardous Materials), Tanker Vehicles, Doubles/Triples, Passenger Vehicles, and School Bus. All practice questions are based on Wisconsin DMV CDL requirements.
Yes — DriveAce offers free CDL practice questions for Wisconsin. Study General Knowledge and endorsement-specific questions that mirror the real Wisconsin 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 Wisconsin 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 Wisconsin DMV.
Join thousands of drivers who passed their Wisconsin 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.