Iowa / CDL practice
Iowa CDL practice tests
100 CDL practice questions with explanations. Choose a short test or focus on a topic.
Practice road rules, driving skills and licensing topics. Choose car, motorcycle or CDL practice. Saved mistakes stay separate for each license. Read the handbook section for source dates and coverage.
All topics and study tools
Choose a numbered test
These 5 sets do not overlap. Together they cover these practice questions once. Short final sets keep the real question count.
Practice by topic
General knowledge and cargo
24 questions · explanations and saved review
Air brakes
12 questions · explanations and saved review
Combination vehicles
12 questions · explanations and saved review
Double trailers
6 questions · explanations and saved review
Tank vehicles
6 questions · explanations and saved review
Passenger vehicles
8 questions · explanations and saved review
School bus safety
10 questions · explanations and saved review
Hazardous materials safety
14 questions · explanations and saved review
Selected current CDL qualifications
8 questions · explanations and saved review