Final answer:
Train operators know when coasting is required based on their training and experience, using this technique to save energy and maintain passenger comfort. They are also attuned to operational changes through subtler cues like crowd movements.
Step-by-step explanation:
Train operators are typically knowledgeable about the normal operating conditions and can identify points at which coasting is required. This skill comes from a combination of formal training as well as experience on the job. Operators learn to read the landscape and the track ahead, as well as the performance of the train they are controlling. Coasting is often utilized to save energy, reduce wear on the brakes, and maintain a comfortable ride for passengers. An operator's familiarity with the route allows them to make informed decisions about when to coast without always having to refer to a schedule board or rely on technology.
Seasoned operators are adept at understanding subtle cues, such as the movement of the crowd, to sense changes in the train's schedule or track assignments. Just as commuters may become attuned to the rhythms of their daily travel, operators develop a keen awareness of the operational dynamics to enhance efficiency and safety in the train's journey.