What is the New York seatbelt law requirement for rear-seat passengers?

1. Rear-seat passengers are exempt from seat-belt requirements if they are adults
2. All passengers in all seats must wear seatbelts in New York, including rear-seat passengers
3. Only passengers under 16 need rear-seat belts; adult rear passengers are exempt
4. Rear-seat-belt requirements apply only on highways, not city streets or local roads