2024 CO CDL Practice Test: Class B - Test 7
Based on
2024 CO CDL Handbook
9. What is a dual air brake system?
A
A type of brake system that has two separate air brake systems that use a single set of brake controls.
B
A type of brake system that uses two separate air brake systems and two separate brake controls.
C
A brake system that consists of air brakes and hydraulic brakes.
D
A brake system that works doubly as effective as a single brake system.