🚛🚛Illinois Doubles/Triples — Question 17 of 20
Before you can supply air to the air tanks of a second trailer you need to:
Illinois CDL Doubles/Triples Test Info
Questions on Exam
20
Passing Score
80%
Time Limit
Typically 30 minutes; varies by testing location
Age Requirements
Intrastate: 18+ · Interstate: 21+
Illinois Secretary of State
Official CDL PortalReady to pass your Illinois CDL Doubles/Triples exam?
Get full practice exams, study mode, and simulated tests with detailed explanations.