During what time periods may you not honk your horn in a 50 km/h speed limit zone, unless it is an emergency?

Midnight to 7 am
5 pm to 7 pm
2 pm to 6 pm
11 pm to 7 am

The correct answer is: 11 PM to 7 AM.

New Zealand traffic rules state that in areas with a speed limit of 50 km/h, honking is not allowed between 11 PM and 7 AM the next day, unless in an emergency situation. The main purpose of this regulation is to reduce noise pollution, avoid disturbing residents at night, and ensure that people living in residential areas can enjoy a good and quiet sleep environment.