A dual air brake system:

Question

A dual air brake system is made up of two separate air brake systems. The systems share a single set of brake controls, but each has its own air tanks, hoses, and lines. One system typically operates the regular brakes on the rear axle or axles while the other system operates the regular brakes on the front axle.

Accepted Answer

Consists of two separate air brake systems that share a single set of controls.

Answer

Is a single air brake system with two different sets of controls.

Answer

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.