Document Detail

Risks of Pedestrian Serious Injuries and Fatalities associated with Impact Velocities of Cars in Car-versus-pedestrian Accidents in Japan.
MedLine Citation:
PMID:  24435732     Owner:  NLM     Status:  In-Data-Review    
The first purpose of this study is to clarify the relation between the car impact velocity and pedestrian injury severity or mortality risk. We investigated the frequency of serious injuries and fatalities of pedestrians using vehicle-pedestrian accident data from the database of the Institute for Traffic Accident Research and Data Analysis (ITARDA) in Japan. The vehicle types considered are sedans, minivans, and box vans (ordinary automobiles) and light passenger cars and light cargo vans (light automobiles). The results revealed that a 10-km/h reduction in impact velocity could mitigate severe pedestrian injuries in cases involving impact velocities of 40 km/h or more for the five vehicle types analyzed. Specifically, if the impact velocity was 30 km/h or less, the frequency of serious injuries was less than 27% and the frequency of fatalities was less than 5% for the five vehicle types. Therefore, if the collision damage mitigation braking system (CDMBS) that uses a sensor to detect pedestrians can effectively reduce the impact velocity for various vehicle types, pedestrian injuries will be greatly mitigated. The second purpose of this study is to identify the factors that affect injury risk. Impact experiments were conducted in which a sedan impacted against a pedestrian full-scale dummy at 40 km/h and a pedestrian headform impactor was impacted against a road surface. The results indicated that the risk of pedestrian serious injury was significantly affected by multiple impact conditions, such as the pedestrian height, car impact velocity, car frontal shape, and car stiffness in cases where the car impacted the pedestrian's head, the degrees of influence of which were driven by the vehicle impact velocity.
Yasuhiro Matsui; Shoko Oikawa; Kenichi Ando
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Stapp car crash journal     Volume:  57     ISSN:  1532-8546     ISO Abbreviation:  Stapp Car Crash J     Publication Date:  2013 Nov 
Date Detail:
Created Date:  2014-01-17     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101133951     Medline TA:  Stapp Car Crash J     Country:  United States    
Other Details:
Languages:  eng     Pagination:  201-17     Citation Subset:  IM    
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Relationship between Pedestrian Headform Tests and Injury and Fatality Rates in Vehicle-to-Pedestria...
Next Document:  The roles of mechanical compression and chemical irritation in regulating spinal neuronal signaling ...