To properly secure a train, what is typically required of the train operator?

To properly secure a train, it is essential for the train operator to apply hand brakes on sufficient cars. This action is crucial as it ensures that the train remains stationary, particularly on inclines or when parked in areas where it might roll. The hand brakes provide a mechanical means of holding the train in place, effectively preventing any unintended movement that could lead to dangerous situations.

While reducing speed, notifying passengers to exit, or activating the emergency alarm are important operational procedures in their respective contexts, they do not directly contribute to securing the train in a stationary position. The application of hand brakes is a standard safety practice that directly addresses the need to prevent movement, making it the most appropriate and effective response for securing a train.