Which of the following is an advantage of compression brakes?

Compression brakes, often referred to as engine brakes, offer several key advantages that contribute significantly to vehicle performance and safety, particularly in heavy-duty applications such as trucks.

One notable advantage is the prevention of vehicle overspeed. When going downhill, the engine's compression mechanism helps control the vehicle's speed without relying solely on the service brakes. This is crucial for maintaining safe speeds on descents, especially when the vehicle is heavily loaded.

In addition, compression brakes can facilitate easier transmission shifting. As the engine speed decreases and the load on the transmission becomes more manageable, it allows for smoother gear changes. This is particularly beneficial in vehicles where maintaining optimal engine RPMs can aid in efficient gear transitions.

Another significant benefit is the extension of the life of service brakes. By utilizing the engine’s compression to slow down the vehicle, there is less reliance on the service brakes. This results in reduced wear and tear on brake components, leading to lower maintenance costs and increased longevity of the braking system.

Taking all these factors into account, it becomes clear that the comprehensive benefits of compression brakes encompass several aspects of vehicle operation—thus making the collective statement encompassing all these advantages correct.