North Carolina School Bus Driver Practice Test

Dual air brake system buses typically have two sets of air tanks. This design enhances the safety and reliability of the braking system. One set of air tanks operates the primary braking system, while the second set is used for a secondary braking system. This dual setup ensures that if one system experiences a failure or loss of pressure, the other can still function effectively, providing an additional layer of safety for the bus and its passengers. The presence of two separate air tanks also allows for more efficient management of air pressure and provides redundancy, which is essential in maintaining consistent and effective braking performance.