SAFETYNEWS 22/04/2024
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Empowering Engineers, Automated Driving, Vehicle Safety, Virtual Testing, Legal Requirements, Consumer Protection
Discover the latest safety advancements highlighted in SAFETYNEWS! To kick things off, let's delve into two crucial updates:
FMVSS NPRM’S FOR ELECTRIC POWERED AND HYDROGEN VEHICLES PUBLISHED
Federal Motor Vehicle Safety Standards; FMVSS No. 305a Electric- Powered Vehicles: Electric Powertrain Integrity Global Technical Regulation No. 20, Incorporation by Reference
Action
Notice of proposed rulemaking (NPRM).
Summary
Consistent with a Global Technical Regulation on electric vehicle safety, NHTSA proposes to establish Federal Motor Vehicle Safety Standard (FMVSS) No. 305a to replace FMVSS No. 305, ‘‘Electric-powered vehicles: Electrolyte spillage and electrical shock protection.’’ Among other improvements, FMVSS No. 305a would apply to light and heavy vehicles and would have performance and risk mitigation requirements for the propulsion battery. Relating to a National Transportation Safety Board recommendation, FMVSS No. 305a would also require manufacturers to submit standardized emergency response information for inclusion on NHTSA’s website that would assist first and second responders handling electric vehicles.
Dates
Comments should be submitted no later than June 14, 2024.
Federal Motor Vehicle Safety Standards; Fuel System Integrity of Hydrogen Vehicles; Compressed Hydrogen Storage System Integrity; Incorporation by Reference
Action
Notice of proposed rulemaking (NPRM).
Summary
This notice proposes to establish two new Federal Motor Vehicle Safety Standards (FMVSS) specifying performance requirements for all motor vehicles that use hydrogen as a fuel source. The proposed standards are based on Global Technical Regulation (GTR) No. 13. FMVSS No. 307, ‘‘Fuel system integrity of hydrogen vehicles,’’ which would specify requirements for the integrity of the fuel system in hydrogen vehicles during normal vehicle operations and after crashes. FMVSS No. 308, ‘‘Compressed hydrogen storage system integrity,’’ would specify requirements for the compressed hydrogen storage system to ensure the safe storage of hydrogen onboard vehicles. The two proposed standards would reduce deaths and injuries that could occur as a result of fires due to hydrogen fuel leakages and/ or explosion of the hydrogen storage system.
Dates
You should submit your comments early enough to be received not later than June 17, 2024.
More Information: SafetyWissen.com
Author/Source: NHTSA
The text, images, graphics, sound files, animation files, video files and their arrangement on the news sites are all subject to Copyright and other intellectual property protection. The author resp. the authors can be find on the more information link.
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BICYCLE HANDLEBARS AS A RISK OF INJURY
TU Graz and the "Große schützen Kleine" association have investigated abdominal injuries in children following bicycle accidents as part of a Master’s thesis. Result? The design of the handlebars makes a big difference.
In Austria, around 8,000 children and young people are injured in cycling accidents every year and subsequently treated in hospital. Around 600 of the injuries are directly attributable to contact with the handlebars, and around 19 per cent of these require hospitalisation. It is striking that around half of the injuries caused by the handlebars affect the abdomen. Specifically, they are injuries (e.g. bruises, tears) to the liver, pancreas or spleen, explains Christoph Arneitz, senior physician at the Department of Paediatric and Adolescent Surgery in Klagenfurt, who medically analyses such accidents.
Abdominal injuries typically occur when a child falls onto the end of the handlebars of a bicycle lying on its side on the ground, or in rear-end collisions when the handlebars suddenly turn after a collision.
Simulations with six handlebar ends
Maximilian Schinagl investigated these accident situations for his Master’s thesis at the Institute of Vehicle Safety at Graz University of Technology (TU Graz). Using a virtual human model of a child, he simulated the consequences of a blunt impact to the abdomen from various angles. For his simulations, six handlebar ends from different manufacturers and a defective handlebar end (without protective cap) were used as a base value.
As Schinagl shows on the basis of the simulation-based study, the design of the handlebar ends has a significant influence on whether children are injured in bicycle accidents and how serious these injuries are. Injury criteria such as contact force, penetration depth, loads on the abdominal wall and organs were analysed. Handlebar ends with widened protective caps showed the best protective effect.
Still plenty of research potential
A follow-up project is currently underway at TU Graz in cooperation with the Austrian children’s bicycle manufacturer woom, in which the influence of the handlebar ends on abdominal injuries is being analysed in detail. "In the course of our simulations, we have seen that handlebar ends with a larger diameter can reduce the risk of injury by up to 20 per cent," explains Nico Erlinger from the Institute of Vehicle Safety at TU Graz, who is involved in the project. "As there have only been a few studies on injuries in this type of accident so far, there is still a lot of potential to reduce the risk with further research."
Although woom already uses handlebar ends with widened protective caps that significantly reduce the risk of injury, this project aims to increase the safety of handlebar ends even further. A publication resulting from the project was presented last September at the conference of the International Research Council on the Biomechanics of Injury (IRCOBI) in Cambridge, UK. "Cycling safety is our top priority," says woom CEO Paul Fattinger: "By working together with research institutions, we can optimise the design of bicycle components on the basis of empirical evidence."
More Information: tugraz.at/news
Author/Source: TU Graz
The text, images, graphics, sound files, animation files, video files and their arrangement on the news sites are all subject to Copyright and other intellectual property protection. The author resp. the authors can be find on the more information link.
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