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