What is the proper procedure before detaching your locomotive from the train?

The correct procedure before detaching your locomotive from the train involves securing against undesired movement and closing the angle cock. This step is crucial for safety reasons. When a locomotive is detached, it's important to ensure that the train remains stationary to prevent any unintended movement that could lead to accidents or derailments.

Closing the angle cock isolates the air supply to the train line, preventing any air from escaping, which helps maintain the integrity of the braking system on the remaining cars. This action stabilizes the train and makes the process of detaching the locomotive safer and more controlled.

In contrast, simply detaching without taking precautions leaves the train vulnerable to movement, which can result in hazardous situations. Notifying the dispatcher alone does not address the physical safety needed in this scenario, and leaving angle cocks open could lead to significant issues with air pressure and control of the remaining train cars. Therefore, securing the train and properly managing the air brake system is essential before detaching.