Crash Performance Evaluation of Booster Seats for an Australian Car

The aim of this study was to examine the relative effectiveness of two booster seats for use by children across a wide age span, from around 3 years to 10+ years. The study was part of a broad research program to identify suitable child restraint systems (CRS) to fit a large sedan vehicle to maximise protection in a crash. Dummies were restrained in the rear seat of a vehicle buck in three restraint configurations with boosters: (i) with a standard adult lap-sash seatbelt, (ii) with a seatbelt plus H-harness and crotch strap, or (iii) with a seatbelt plus H-harness with the crotch strap disengaged (to simulate the effects of real-world misuse conditions), and a fourth condition (iv) with an adult seatbelt only. Boosters were fitted in the vehicle with two different anchorage systems: a standard seatbelt and a system including a retrofitted rigid ISOFIX attachment and top tether. HyGe sled tests were conducted to simulate a 64 km/h offset deformable barrier frontal impact with a change in velocity of around 71 km/h. Preliminary investigations were also conducted using side impact simulations with a change in velocity of around 15 km/h. Overall, the booster seats for both the 6 year old dummy and the 3 year old dummy (with harness and crotch strap) provided superior crash protection than use of the adult seatbelt. For tests when the H-harness was used to restrain the dummy, use of the crotch strap was critical in eliminating ‘sub-marining’. The research highlighted the potential for serious injury with misuse of child harness systems and identified several areas for design improvement of booster seats.


  • English

Media Info

  • Media Type: Web
  • Features: Figures; Photos; References; Tables;
  • Pagination: 7p
  • Monograph Title: Proceedings - 19th International Technical Conference on the Enhanced Safety of Vehicles (ESV), Washington, D.C., June 6-9, 2005

Subject/Index Terms

Filing Info

  • Accession Number: 01066501
  • Record Type: Publication
  • Report/Paper Numbers: 05-0425
  • Files: TRIS, USDOT
  • Created Date: Sep 4 2007 11:33AM