motorcycle crash testing
TRANSCRIPT
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Chiara S. Dobrovolny, Ph.D.Roadside Safety & Physical Security Division
Texas A&M Transportation InstitutePh.:979-845-8971
June 7th 20162016 Traffic Safety Conference
College Station, Texas
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Manual for Assessing Safety Hardware (MASH) – Version 2016
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Limited research to address riders safety when impacting roadside safety hardware
No US testing standards for motorcycle riders safety when impacting roadside safety devices
No world testing standards when impacting in upright position◦ Real world crash data showing approximately 50% of motorcycle crashes
into barriers occur with the rider in the upright position.
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In US, per 100,000 registered motorcycles, 59 bikers are involved in fatal road accidents (compared to 10 vehicle fatal accidents)◦ In EU: 11 fatal road accidents for motorcyclists and 5 fatal vehicle occupant accidents
Over years passenger vehicle deaths have been reduced while motorcyclists deaths have remained constant.
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1998: LIER-INRETS (France) Since then, all motorcyclist protection systems must be tested according to this procedure before
being approved for use on French roads.
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1998: LIER-INRETS (France) Since then, all motorcyclist protection systems must be tested according to this procedure before
being approved for use on French roads.
2003: AENOR (Spain) Further developed same French test
configuration resulting in Spanish national standard UNE-135900 in 2005.
2008: AENOR (Spain) Further revision of UNE-135900 standard
included additional test speed of 70 km/h (43 mi/h).
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1998: LIER-INRETS (France) Since then, all motorcyclist protection systems must be tested according to this procedure before
being approved for use on French roads.
2003: AENOR (Spain) Further developed same French test configuration resulting in Spanish national standard UNE-
135900 in 2005.
2008: AENOR (Spain) Further revision of UNE-135900 standard included additional test speed of 70 km/h (43 mi/h).
2011: Technical Specification (EU) EN 1317-8: “Motorcycle road restraint systems which reduce the impact severity of motorcyclist
collisions with safety barriers” (motorcyclist protection systems added to barriers)
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2011: Technical Specification (EU) EN 1317-8: “Motorcycle road restraint systems which reduce the impact severity of motorcyclist
collisions with safety barriers” (motorcyclist protection systems added to barriers)
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TRL Ltd. (Transport Research Laboratory) (UK) “TRL have not, and will not be testing to this standard (EN 1317-8) due to the costs involved (…)”
(Gavin Williams, Technical Specialist)
2005 International Standard ISO 13232 “Motorcycles - Test and Analysis Procedures for Research Evaluation of Rider Crash
Protective Devices Fitted to Motorcycles” (8 parts) (Motorcycle vs. car)
DEKRA Crash Test Center (Germany) Motorcycle crash tests (ISO 13232)
BASt (Federal Highway Research Institute) (Germany) Has defined an homologation procedure for impact protector
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2 designs to reduce aggressiveness of beam guardrail: (a) added lower beam & upper beam, (b) removed upper beam & reduced lower beam stiffness
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51% of cases: impacted barrier in upright position; 45% of cases: motorcycle slid on its side before striking barrier
Kawasaki ER 5 Twister (180kg + 272kg ATD)
ATD: Hybrid III dummy : loads measured for head (HIC, a3ms), chest (a3ms), pelvis (a3ms) and femur (Fleft, Fright) corresponding to moment of first “primary” impact into guard rail and “secondary” impact onto road surface
Steel Barrier was modified injury risk lower w/ modified system. Underrun protection board eliminated risk of snagging for ATD and absorbed kinetic energy due to deformation after impact
Further improvements needed since motorcycle was not redirected away from protection system
Questioned biofidelity of Hybrid III to sufficiently predict injury risks
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17 staged motorcycle crash tests were conducted at World Reconstruction Exposition 2000 (WREX2000) held at College Station.
Objective: evaluate characteristics of heavy motorcycle involved in collisions w/ two stationary targets: rigid heavy concrete block (7), and an automobile (10).
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Hybrid II 50th (Humanetics) Hybrid III 50th (Humanetics)
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Meets SAE J211 and ISO 13232-4
Sit/stand pelvis; gripping hands;
28 ISO standardized biofidelity enhancements
Arm: NO frangible
Limb amputation: NO (leg cables)
Hybrid III 50th (Humanetics) MODIFIED
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Computer simulations are quick and inexpensive compared to full-scale crash tests
Several different motorcycle crash scenarios can be simulated to observe motorcycle rider behavior and injury risk
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Impact speed: 30 mph◦ Based on ISO 13232-7 standards
Simulation run time of 0.04 seconds◦ Time when motorcycle began to rebound from wall
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Validate motorcycle model components Validate motorcycle against full-scale crash test Include ATD to determine motorcycle crash
scenarios with severe injury probability
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Robert Wunderlich (Director, Center for Transportation Safety, TTI)
Dr. Dean Alberson (Roadside Safety & Physical Security Division, TTI)
Dr. Mike Manser (Human Factors Program Manager, TTI)
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Chiara S. Dobrovolny, Ph.D.Roadside Safety & Physical Security Division
Texas A&M Transportation InstitutePh.:979-845-8971