when they are travelling, in the front a child, now one year, must use an approved child restrain design for age and weight, a child over one may wear any approved child restraint on adult seat belt, in the rear a child must be restrained and the appropriate restrain is fitted, the  the term appropriate restrain includes the following; infants under one year old, a carry or cot which is held by straps, children one, two or three years in appropriate child seat or harness or booster cushion with an adult belt, not a household cushion.