Connecticut / CDL
Connecticut CDL practice tests
108 CDL questions with explanations. Choose a short test or focus on a topic.
All topics and study tools
General-knowledge sets
These 2 sets do not overlap. Endorsement and licensing practice is separate in the topic list below.
Quick reviews
One focused recap at a time. These short sets keep their original questions and saved attempts.
Prefer a longer session? Open mixed practice →Practice by topic
General knowledge
24 questions · explanations and saved review
Air brakes
12 questions · explanations and saved review
Combination vehicles
12 questions · explanations and saved review
Passenger transport
8 questions · explanations and saved review
Doubles and triples
6 questions · explanations and saved review
Tank vehicles
6 questions · explanations and saved review
Hazardous materials
14 questions · explanations and saved review
School bus
10 questions · explanations and saved review
Licensing and training
16 questions · explanations and saved review