This paper is based on 25.000 crashes which occurred in Sweden between 1976 and 1996. The analysis is carried out on a subset of 4242 child occupants between 0 and 15 years of age, restrained and unrestrained. A positive trend to more frequent use of child restraint systems (CRS) in Sweden, during the last 20 years, is shown in the paper. During the same period, the overall injury risk, for different age groups of child occupants, has decreased substantially. This indicates the high effectiveness of CRS. Children need car occupant safety systems specifically designed for their size. The paper clearly states the need for child safety systems, and discusses benefits and drawbacks with regard to different restraints, ages, and injuries. The analysis points out, that when a crash occurs, the maximum effect of a CRS is not reached, if the child is not using the correct system for his/her size. There is even a tendency that the injury risk increases when children switch from one restraint system to another, that is to say when they are at the youngest ages for which the specific restraint is recommended. (A)
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