Child restraints will be mandatory for children aged up to seven under new rules announced by Government today.
Associate Minister of Transport Simon Bridges said the change to child restraint rules was needed to reduce crash injuries among young primary school-age children.
Under the current law, children up to the age of five must be placed in a children restraint such as a booster seat.
The new law will require children up to the age of seven to be placed in a restraint, while those aged between seven and eight have to use one if it is available.
Mr Bridges said the changes were made in line with international and local research on the risks adult seatbelts pose to children.