CDL Air Brakes TestDual Air Brake SystemsEasy
A technician is inspecting a dual air brake system. They observe that the primary air tank is supplying air to the rear service brakes and the parking brake control, while the secondary air tank supplies air to the front service brakes. This configuration is:
- AOnly found on older, less efficient air brake designs.
- BA standard and correct configuration for dual air brake systems.
- CAn incorrect setup that requires immediate correction.
- DIndicative of a system designed for off-road or specialized vehicles.
Show answer & explanationAnswer & explanation
Correct answer: B. A standard and correct configuration for dual air brake systems.
This described setup, where the primary system handles rear brakes and parking brake control, and the secondary handles front brakes, is the standard and correct configuration for most dual air brake systems.
Why the other options are wrong
- A. This is the modern and efficient design, not just for older systems.
- C. This is the typical and correct configuration, not an incorrect one.
- D. This is a standard configuration for most on-road commercial vehicles, not specialized ones.
Standard Dual Air System Configuration
In a typical dual air brake system, the primary system controls the rear service brakes and the parking brake control, while the secondary system controls the front service brakes.
- Primary = Rear Brakes + Parking Brake Control.
- Secondary = Front Brakes.
- Ensures critical redundancy.
Memory trick: Primary to the back, secondary to the front, parking brake follows the main run.