What is a major advantage of using air brakes over hydraulic brakes?

Answer: B — Air brakes provide greater stopping power for larger vehicles

Air brakes offer a significant advantage for larger vehicles due to their ability to provide greater stopping power. This is particularly important in heavy-duty applications, such as with trucks and buses, where the size and weight of the vehicle can create challenges for braking systems. The design of air brake systems is specifically suited for larger vehicles because they operate using compressed air to apply the brakes, which allows for rapid and consistent force application across multiple braking systems as well as more effective dissipating of heat that typically builds up during heavy braking. The increased stopping power is crucial for safely bringing larger vehicles to a halt in a controlled manner, especially under load or while descending downhill, where maintaining control is vital. The hydraulic brake systems, while they work effectively for lighter vehicles, might not provide the same level of performance under the strain of heavy loads, making air brakes a preferred choice for commercial vehicles.