All occupants in a Queensland vehicle must wear a seatbelt. Which of the following is also a legal requirement?

1. Seatbelts must only be worn on roads with speed limits above 60 km/h
2. Seatbelts must be worn with the belt over the shoulder, across the chest, and buckled low on the hips
3. Rear-seat passengers over 16 do not need to wear seatbelts
4. The driver is only responsible for passengers under 16