Can you use your horn in built-up areas in Italy?

In built-up areas in Italy, it is permissible to use your horn, but only as a means of warning other road users. This regulation is in place to avoid unnecessary noise pollution and ensure that the use of the horn is reserved for situations where it is genuinely needed to prevent accidents or alert others to your presence. Using the horn in other situations, such as simply expressing frustration or in any other non-emergency context, would not comply with the regulations.

While the other options provide various scenarios regarding horn usage, they do not align with the legal framework. For instance, saying you can use the horn at any time disregards the importance of maintaining quiet in urban environments, where excessive noise can be disruptive. Similarly, suggesting that you can use the horn only if someone is in your way could be too restrictive and not fully encompass the safety aspect. Lastly, claiming that horns are completely prohibited ignores the allowance for warning use, which is crucial for road safety.