When do children over the age of 3 no longer need to use a child seat, booster seat or booster cushion?

Children over the age of 3 no longer need to use a child seat, booster seat or booster cushion when they are 135 centimetres or taller.

Even if a child no longer needs to use a child safety device, the child must never sit in front of an activated airbag until he or she is 140 centimetres or taller.