When should a school bus driver use the horn?

A school bus driver should use the horn to warn pedestrians or other drivers of potential danger because the primary purpose of using the horn is to enhance safety. The horn serves as an auditory warning signal, alerting others on the road to possible hazards, such as when a bus is approaching a stop or if a pedestrian is crossing in front of the bus. This proactive approach helps prevent accidents and ensures that both those inside the bus and those in the vicinity are aware of potentially dangerous situations.

Using the horn for reasons such as alerting other drivers when late or passing other vehicles would not align with safety-focused driving practices. Additionally, the horn should not be used casually or in situations where it could cause confusion or alarm without a valid reason, such as exclusively at bus stops. The emphasis should always be on promoting safety and clear communication on the roadway.