2024 HI CDL Practice Test: Air Brakes - Test
Based on
2024 HI CDL Handbook
6. A dual air brake system:
A
Consists of two separate air brake systems that share a single set of controls.
B
Is a single air brake system with two different sets of controls.
C
Consists of one air brake system for the left side of the truck and one system for the right side of the truck, each with its own set of controls.