Appropriate restraint definitions based on current restraint use laws in New South Wales, Australia
| Child age | Restraint type |
| 0–6 months | Rearward-facing restraint |
| 6 months to <4 years | Rearward-facing or forward-facing restraint |
| 4 years to <7 years | Forward-facing restraint or booster seat |
| 7+ years | Forward-facing restraint, booster seat or adult seat belt. |