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Rear-Seat Occupant Responses in NHTSA Rear Crash Tests
Technical Paper
2018-01-1330
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
This study analyzed FMVSS 301 rear impact tests with an instrumented rear-seat dummy. NHTSA conducted 15 FMVSS 301 rear crash tests with an instrumented and belted 50th Hybrid III dummy in the rear seat. In series 1, there were three repeat tests with the Jeep Liberty and two others, but no onboard camera view. In series 2, there were 8 tests with 2003-2005 MY (model year) vehicles that had rear head restraints. In series 3, there were two tests with 2004-2005 MY vehicles that did not have rear head restraints. There was an onboard camera view of the rear occupant in series 2 and 3. The dummy responses were evaluated and compared to relevant IARVs (injury assessment reference values). Based on the HRMD, the average height of the rear head restraints was 80.4 ± 3.4 cm (31.6″ ± 1.3″) above the H-point. In series 1, the delta V was 24.4 ± 2.0 km/h (15.2 ± 1.3 mph). The upper neck extension moment averaged 28% ± 10% of IARV and the lower neck extension moment was 56% ± 26% with a head restraint. The neck extension angle was −34.2 ± 10.7 deg. In series 2, the rear impact resulted in 27.7 ± 2.7 km/h (17.2 ± 1.7 mph) delta V in vehicles with rear head restraints. It was 28.4 ± 2.4 km/h (17.6 ± 1.5 mph) in the two tests without a rear head restraint in series 3. The upper neck extension moment averaged 37% ± 20% in series 2 with a head restraint and 45% ± 15% without. The lower neck extension moment averaged 47% ± 21% in series 2 with a head restraint and 82% ± 35% without. The head-to-torso extension angle was −23.0 ± 18.1 deg in series 2 with a head restraint and −63.7 ± 0.4 deg without. All but one of the biomechanical responses were below IARV. In four tests with head restraints, the dummy ramped up the seatback and the head interacted with the roof liner. This resulted in neck compression and extension and may be a factor for mid-sized and taller occupants in rear seats with head restraints.
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Citation
Viano, D. and Parenteau, C., "Rear-Seat Occupant Responses in NHTSA Rear Crash Tests," SAE Technical Paper 2018-01-1330, 2018, https://doi.org/10.4271/2018-01-1330.Data Sets - Support Documents
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References
- Buck , C.A. , Dameron , F.B. , Dow , M.J. , and Skowlund , H.V. Study of Normal Range of Motion in the Neck Utilizing a Bubble Goniometer Archives of Physical Medicine and Rehabilitation 40 September 1959
- Donde , H. , Lad , R. , Biswas , P. , Patil , P. et al. Reduction in Time to Market of Automotive Seating System Using LS-DYNA 7th European LS-DYNA Conference 2002 http://feainformation.com/m-pdf/donde.pdf
- ECE Regulation R17.07 May 3-7 2004
- Kahane , C.J. January 2015
- Mertz , H.J. , Jarrett . K. , Moss , S. , Salloum , M. et al. The Hybrid III 10-Year-Old Dummy Stapp Car Crash Journal 45 1 10 2001
- Mertz , H.J. , Irwin , A.L. , and Prasad , P. Biomechanical and Scaling Bases for Frontal and Side Impact Injury Assessment Reference values 2003-22-0009 Stapp Car Crash Journal 47 155 188 2003
- Mertz , H.J. , Irwin , A.L. , and Prasad , P. Biomechanical and Scaling Basis for Frontal and Side Impact Injury Assessment Reference Values Stapp Car Crash J. 60 625 657 2016
- Mertz , H.J. and Patrick , L.M. Investigation of the Kinematics and Kinetics of Whiplash SAE Technical Paper 670919 1967 10.4271/670919
- NHTSA Drivers’ Mistakes When Installing Child Seats December 2009
- NHTSA January 23 2015
- NHTSA November 2004
- NHTSA December 14 2004
- NHTSA March 2006
- NHTSA May 4 2007
- NHTSA November 2 2010
- NHTSA November 2006
- NHTSA May 2003
- Nyquist , G.W. , DuPont , F.T. , and Patrick , L.M. Pick-Up Truck Rear Window Tempered Glass as a Head Restraint - Head and Neck Loads Relative to Injury Reference Criteria SAE Technical Paper 841658 1984 10.4271/841658
- SAE January 1998
- Safe Ride News http://www.saferidenews.com/srndnn/SafetyTopics/UsingCarSeatsBoostersandSeatBelts/InstallationofCarSeats/AdjustingVehicleHeadRestraints/tabid/390/Default.aspx July 14 2017
- Severy , D.M. , Brink , H.M. , and Braird , J.D. Backrest and Head Restraint Design for Rear-End Collision Protection SAE Technical Paper 680079 1968 10.4271/680079
- Severy , D.M. , Brink , H.M. , and Braird , J.D. Vehicle Design for Passenger Protection from High-Speed Rear-End Collisions SAE Technical Paper 680774 1968 10.4271/680774
- Viano , D.C. , Parenteau , C.S. , Prasad , P. , and Burnett , R. Occupant Responses in High-Speed Rear Crashes: Analysis of Government+-Sponsored Tests SAE Technical Paper 2008-01-0188 2008 10.4271/2008-01-0188
- Viano , D.C. and Parenteau , C.S. Effect of Cargo Loading on Occupant Injury and Seat Deformation in Motor-Vehicle Crashes Traffic Injury Prevention 15 835 843 2014