According to regulations, what is important about sounding your horn in built-up areas?

Sounding your horn in built-up areas primarily serves the purpose of warning other road users of your presence, especially in situations where visibility is limited or potential hazards exist. Regulations emphasize this aspect to promote safety and minimize noise pollution. In urban environments, where residents and pedestrians may be affected by excessive noise, the intent is to ensure that any use of the horn is purposeful and directly related to avoiding danger.

Using the horn for any reason other than warning can lead to disturbances and may not be in compliance with local traffic laws. Therefore, understanding the specific context and regulations surrounding horn usage in built-up areas is crucial for responsible driving.