A series of psychological and technical studies of child seats for cars has been pursued at the National Swedish Road and Traffic Research Institute. This is a report of two of these studies. The first study deals with two to five year old children's potentially dangerous capacity for opening different buckles on child seats. The second study deals with adults' difficulties in removing children from different types of child seats under simulated conditions of darkness, which involved testing the buckles as well as the harnesses on these seats. A child-dummy was used in the second study. In the first experiment all but one of the children over four years of age opened all of the buckles. Half of the buckles were even opened by one or more of the youngest children. The buckles can be divided into three categories; those which are technically difficult to open, those which require strength to open, and those which are both technically difficult and strenuous. The buckles in the last category were the most difficult ones for the children to open, and one of these buckles could not be opened by any child under four years of age. In the experiment with adults, opening times for the buckles differed greatly, and it took more than two minutes before one or more of the subjects had "rescued" the child-dummy from five of the ten seats.

Media Info

  • Features: Figures; References; Tables;
  • Pagination: 64 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00099554
  • Record Type: Publication
  • Source Agency: National Safety Council Safety Research Info Serv
  • Report/Paper Numbers: No. 37A
  • Files: TRIS
  • Created Date: Nov 5 1975 12:00AM