What does the air brake system utilize to stop a vehicle?

The air brake system utilizes compressed air to stop a vehicle. This braking method is particularly important in larger vehicles, such as trucks and buses, where hydraulic systems may not be as effective due to the weight and size of the vehicle. The compressed air is stored in tanks and used to activate the brake mechanisms, allowing for strong and reliable stopping power.

When the driver applies the brakes, the air is released from the tanks and sent to the brake chambers, pushing a piston that engages the brake shoes against the brake drum, effectively slowing down the vehicle. This system is favored for its reliability, especially in heavy-duty applications, as it can provide consistent braking performance even in extreme conditions.

Hydraulic fluid, vacuum pressure, and mechanical force are not employed in air brake systems, as these methods are used in different types of braking systems.