What is the function of air brakes in a locomotive?

The function of air brakes in a locomotive is primarily to slow down or stop the train. Air brakes operate by using compressed air to apply pressure to brake pads, which then grip the wheels of the train. This system allows for effective and controlled braking, which is essential for the safety and operational efficiency of the train.

When the engineer activates the air brakes, it releases the compressed air, which activates the braking mechanism. This interaction is crucial during various operational scenarios, such as approaching a station, stopping at signals, or responding to emergency situations where immediate braking is necessary. Understanding the mechanics and functionality of air brakes is fundamental for locomotive engineers, ensuring they can manage the train's speed and stability efficiently and safely during their duties.