Who is responsible for making sure passengers aged 15 and over wear a safety belt?

Passengers aged 15 and over are responsible for ensuring that they wear their safety belts. This responsibility is anchored in New Zealand law, which places the onus on the individual in that age group to buckle up. While it is true that the driver has a role in promoting safety and can encourage passengers to wear their seatbelts, the legal requirement specifies that passengers themselves must take action to secure their safety. This law is in place to help reduce the risk of injury in the event of a crash, emphasizing personal accountability and the importance of each individual's role in road safety. Therefore, the correct answer reflects the legal expectation placed on those passengers.