When is it appropriate to use the locomotive's bell?

Using the locomotive's bell is particularly important when approaching a grade crossing. This is a crucial safety measure designed to alert both pedestrians and vehicles that a train is imminent. The sound of the bell serves as an auditory warning that can make a significant difference in ensuring awareness and preventing accidents at crossings where visibility might be limited.

While there are other situations where the bell might also be used, such as in emergency scenarios or when entering a station, the primary purpose of notifying those near the tracks of the train's approach is best exemplified in the context of a grade crossing. The bell's use at this moment helps to enhance safety and mitigate risks associated with potential collisions.