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Comparison of Restraint System Marks with Proper and Improper Belt Usage
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 20, 2009 by SAE International in United States
Annotation ability available
Accident investigators are often required to determine if an occupant was using a seat belt during a collision. Substantial research has been conducted on the types of physical evidence generated on a seat belt by occupant loading during a collision. However, very little research has been conducted concerning the characteristics of physical evidence that is created when an occupant uses their seat belt improperly. Case studies with misused seat belts were reviewed showing tell-tales of atypical or improper restraint usage. Occupants also experienced injuries consistent with greater excursion and contact with vehicle interior surfaces. To compare the physical evidence of properly and improperly used restraints, automotive frontal sled tests were conducted with matched pairs of anthropomorphic test devices (ATD) with seat belts used both correctly and incorrectly. When the seat belt was used improperly, distinctly different marks were observed. Improper seat belt usage also produced less effective restraint geometry and caused the ATD to experience greater forward excursion.
CitationBrown, J., Raasch, C., and Davee, D., "Comparison of Restraint System Marks with Proper and Improper Belt Usage," SAE Technical Paper 2009-01-1243, 2009, https://doi.org/10.4271/2009-01-1243.
- Green RN. “Improper use of Occupant Restraints: Case Studies from Real-World Collisions”, 30th Annual Proceedings American Association for Automotive Medicine, October 1986
- Gotschall CS, et al. “Injury Patterns Associated with Child Restraint Misuse,” SAE 97331
- Weinstein EB, et al. “The Effect of Size Appropriate and Proper Restraint Use on Injury Severity of Children,” SAE 973310
- National Highway Traffic Safety Administration, “Effectiveness of Occupant Protection Systems and Their Use,” Fifth/Sixth Report to Congress, DOT HS 809 442, November 2001.
- Moffatt CA, Moffatt EA, Weiman TR. “Diagnosis of Seat Belt Usage in Accidents,” SAE 840396.
- Gorski ZM, German A, Nowak, ES. “Examination and Analysis of Seat Belt Loading Marks,” Journal of Forensic Sciences, JFSCA, Vol 35, No. 1, Jan. 1990, pp. 69–79.
- Bready JE, Nordhagen RP, Kent RW. “Characteristics of Seat Belt Restraints Systems Markings,” SAE 2000-01-137.
- Tanner CB et al. “Automotive Restraint Loading Evidence for Moderate Speed Impacts and a Variety of Restraint Conditions,” SAE 2006-01-0900.
- Bready JE, Nordhagen RP, Kent RW. “Seat Belt Survey: Identification and Assessment of Noncollision Markings,” SAE 1999-01-0441.
- Raymond, DE, et al. “Forensic Determination of Seat Belt Usage in Automotive Collisions: Development of a Diagnostic Tool,” SAE 2006-01-1128.
- Davee D, Brown J, Raasch C. “Case Study of Clothing Fabric Transfer to Seat Belt Webbing Under Accident Forces” SAE 2006-01-0904.