When may a horn be honked within city limits?

In many cities, a horn may be honked to alert other drivers or pedestrians to avoid a potential collision, such as in situations where there is an immediate hazard. Additionally, it can be used in emergency situations to signal urgency. However, excessive honking or honking for non-emergency reasons, like expressing frustration or annoyance, is typically prohibited and may result in fines. Always check local ordinances for specific regulations regarding horn use.