How do wedge brakes operate?

Wedge brakes operate with small air chambers and wedge-shaped pushrods, which is why this option is the correct choice. The design of wedge brakes involves an air chamber that, when pressurized, pushes a wedge-shaped component against a brake drum or disc. This wedge action effectively increases the friction between the brake lining and the drum or disc, allowing for a powerful braking force.

The mechanics of wedge brakes are particularly efficient for heavy-duty applications, such as those found in commercial vehicles and trailers, where significant stopping power is necessary. The simplicity of the wedge mechanism also means that it can be more reliable under heavy loads compared to some other braking systems.

Understanding this operation is crucial for those dealing with heavy trailers, as it impacts how drivers should maintain and operate vehicles equipped with this braking technology.