This Section Covers:

• Air Brake System Parts 
• Dual Air Brake Systems  
• Inspecting Air Brakes
• Using Air Brakes 

This section tells you about air brakes. If you want  to drive a truck or bus with air brakes, or pull a  trailer with air brakes, you need to read this  section. If you want to pull a trailer with air brakes,  you also need to read Section 6, Combination  Vehicles.