Which maneuver is illegal in residential areas in Italy?

Driving over the speed limit is illegal in residential areas in Italy because speed limits are established to enhance safety for all road users, especially in areas where pedestrians may be present. Residential areas often have lower speed limits to minimize risks and protect vulnerable individuals, such as children and elderly residents. Exceeding these limits can lead to serious consequences, both legally and in terms of safety.

The other maneuvers listed may have restrictions but are not categorized universally as illegal in the same way. For instance, parking in designated zones is allowed and necessary for orderly vehicle management. Excessive noise from the vehicle may be subject to local noise regulations but is not inherently illegal unless it violates specific ordinances. Similarly, while it's essential to watch for pedestrians, slow driving in itself is not illegal and can be encouraged for safety purposes.