What should a train operator do when visibility is impaired due to weather conditions like snow or fog?

When visibility is impaired due to weather conditions such as snow or fog, it is crucial for a train operator to prioritize safety. Operating the train slowly enough to stop within visible distance allows the operator to respond effectively to any unexpected obstacles, signals, or other trains that may not be immediately visible. This practice aligns with fundamental safety protocols which emphasize the need to adapt to environmental conditions and ensure passenger safety.

Maintaining a reduced speed helps to provide the necessary reaction time in case of any unforeseen circumstances, thereby minimizing the risk of accidents. Furthermore, it reflects a respectful approach to the operational guidelines that govern train movement in adverse weather, ensuring that safety remains the top priority. Thus, this choice is aligned with best practices in train operation and safety management.