Illinois CDL General Knowledge Test

107 original practice questions covering 17 topic areas, split into 5 practice tests of up to 25 questions each.

Practice Tests

Practice by Topic

Tap a topic to practice just those questions.

• accident procedures
• air brakes
• backing parking
• basic control
• cargo securement
• combination vehicles basics
• drugs alcohol cdl
• fire safety
• general driving knowledge
• hazmat awareness
• hours of service
• medical requirements
• out of service
• railroad crossings
• speed space management
• vehicle inspection
• vehicle systems

Guides