The law

Child car restraint laws reduce the risk of injury caused by the use of unsuitable restraints for a child’s size by specifying the type of restraint to be used at different ages and where children must be seated in a vehicle.

The laws require children from:

  • Birth to under 6 months to be restrained in a rearward facing child restraint (e.g. infant capsule).
  • 6 months to under 4 years to be restrained in either a rearward or forward facing child restraint with in-built harness.
  • 4 years to under 7 years to be restrained in either a forward facing child restraint or booster seat restrained by a correctly adjusted and fastened seatbelt or child safety harness.

Also, children under 4 years are not allowed to sit in the front seat of a vehicle with two or more rows of seats, and those from 4 years to under 7 years are only allowed to sit in the front seats if all rear seats are occupied by children less than 7 years of age.

Children 7 years and over can be restrained in an adult seatbelt or booster seat.


In Western Australia, parents and carers of any child who requires a child car restraint must comply with AS/NZS 1754.
Those who cannot comply with AS/NZS 1754 must apply to the Department of Transport for approval to use AS/NZS 4370, which is the standard of restraints for children with a disability.

Inquiries about child restraint exemptions for children with a disability should be directed to:

Vehicle Safety and Standards
Department of Transport
21 Murray Road South WELSHPOOL 6106
Tel: (08) 9216 3891
Tel: (08) 9216 3891

Child restraint safety ratings

The Child Restraint Evaluation Program conducts child restraint crash tests and awards them safety ratings, with the results listed on the CREP website.