What is one advantage of a dual air brake system?

One of the significant advantages of a dual air brake system is that it ensures the secondary brakes can still function even if the primary pressure is lost. This feature enhances vehicle safety by preventing a complete brake failure, which could lead to dangerous situations. In a dual air brake system, two independent air systems are present: one for the primary brakes and another for the secondary brakes. If there's a failure in one system, the other can still provide necessary braking forces, allowing the driver to maintain control of the vehicle and come to a stop safely.

This design is particularly important in heavy vehicles, where weight and stopping distance are critical factors. The redundancy offered by the dual air brake system gives drivers confidence that they will still have at least partial braking capability even in the event of an issue with one of the systems. This safety feature is vital for avoiding accidents and ensuring the reliability of the braking system under various conditions.