What is a fixed stop arm used for?

A fixed stop arm is a safety device used to alert trains of a stop signal. It serves as a visual signal that communicates critical information to train operators regarding the need to stop due to various reasons, such as track conditions, signals, or other operational protocols. When in place, the stop arm indicates to the train crew that they must halt their progress, allowing for safe operation within the rail network.

This device is particularly important for ensuring the safety of both train operations and surrounding areas, as trains cannot stop on a dime and require timely communication of stop signals to avoid collisions or accidents. By having a fixed stop arm in position, operators are given a clear and immediate directive that enhances overall safety and operational efficacy on the tracks.