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Effectiveness of Belt-Positioning Booster Seats Based on Volvo’s Swedish Accident Database

Effectiveness of Belt-Positioning Booster Seats Based on Volvo’s Swedish Accident Database. Johnny Korner Volvo Car Corporation. Volvo Accident Research Established in 1970. Basis for: Safety Development Amendments Test Methods Requirements Priorities Effectiveness.

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Effectiveness of Belt-Positioning Booster Seats Based on Volvo’s Swedish Accident Database

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  1. Effectiveness of Belt-Positioning Booster SeatsBased on Volvo’s Swedish Accident Database Johnny Korner Volvo Car Corporation

  2. Volvo Accident Research Established in 1970 Basis for: • Safety Development • Amendments • Test Methods • Requirements • Priorities • Effectiveness

  3. Volvo Accident Data Base • Volvo cars only,mostly in Sweden • 1976 - 2000 • 28 000 crashes • 48 000 occupants • 200 variables: • Crash circumst. • Car performance • Occupants • Medical records

  4. Child Accident Subset • 4448 children, 0 - 15 years • 48% girls, 52% boys • 74% rear, 26% front • 78% restrained • 878 in Booster Seat • 2211 in Adult Belt Only

  5. Booster Seat Evolution

  6. Integrated Booster Seats

  7. Child Restraint Use in Volvo Cars in Sweden 1976-2000

  8. Injury Frequency MAIS 2+Volvo Cars in Sweden 1980-2000

  9. Injury Frequency MAIS 2+by CRS

  10. Effectiveness MAIS 2+by CRS E = 60% E = 78% E = 89%

  11. Effectiveness MAIS 2+Booster vs Belt Only E = 45%

  12. 72% 45% 49% Effectiveness AIS 2+ vs Belt Effectiveness AIS 2+ vs Booster Child Restraint Use in Sweden 1990-2000

  13. Injury Risk by Body Region and CRSAIS 2+

  14. CrashType Distribution (MAIS 2+)(122 Children, Belt Only & Booster)

  15. Injury Risk by Crash Type & CRSHeadAIS 2+

  16. Injury Risk by Crash Type & CRSAbdomenAIS 2+

  17. Injury Risk at Change to Next CRS(Youngest Recommended Age)

  18. ConclusionsBelt-Positioning Booster Seats • EffectivenessAIS 2+ • vs Unrestrained: 78% • vs Belt Only: 45% • Due to Better Belt Positioning, Boosters Reduce: • Abdominal Injuries in Frontal Impacts, Multiple Events • Head Injuries in Rollovers, Multiple Events • Clavicle fractures in Frontal Impacts, Multiple Events • Many Children Don’t Use the Optimal CRS for Their Age • Injury Risk Higher at Youngest Age Recommended for the CRS Booster Seats Adaptable to Size of Child Desirable

  19. Volvo Safety Concept Car Adaptable Belt-Positioning Booster Seat

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