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Fractions of fatal crashes attributable to speeding: Evolution for the period 2001-2010 in France.
MedLine Citation:
PMID:  23414912     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Road safety is a major concern in the West, especially in France. Among all the established risk factors for fatal crashes, speed is specific in two ways: every road-user is exposed to it, and it increases not only crash rates but also the severity of crashes. Thus, speed regulation is of primary importance in road-safety policy and has also generated much public debate. To contribute to this debate, we constructed a power-model which relates the number of fatal crashes to speed raised to the power four. Despite its simplicity, this model fitted the data well. Notably, it enabled the fractions of fatal crashes attributable to various levels of speeding to be estimated. Data for secondary roads over the period 2001-2010 showed that the fraction of fatal crashes attributable to high-level speeding (>20kph over the speed limit) decreased from 25% to 6% and that attributable to medium-level speeding (10-20kph over the speed limit) decreased from 13% to 9%, whereas that attributable to low-level speeding progressively increased from 7% to 13%. Similar trends were observed on main roads. These results highlight the effectiveness of the speed regulation policies introduced during the study period with respect to high-level speeding. They also suggest that future policy should focus on low and medium-level speeding in order further to reduce road deaths significantly, since these levels now correspond to the major fraction of fatal crashes.
Authors:
Vivian Viallon; Bernard Laumon
Publication Detail:
Type:  JOURNAL ARTICLE    
Journal Detail:
Title:  Accident; analysis and prevention     Volume:  52C     ISSN:  1879-2057     ISO Abbreviation:  Accid Anal Prev     Publication Date:  2013 Mar 
Date Detail:
Created Date:  2013-2-18     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  1254476     Medline TA:  Accid Anal Prev     Country:  -    
Other Details:
Languages:  ENG     Pagination:  250-256     Citation Subset:  -    
Copyright Information:
Copyright © 2013 Elsevier Ltd. All rights reserved.
Affiliation:
Université de Lyon, F-69000, Lyon, France; IFSTTAR, UMRESTTE, F-69500, Bron, France; Université Lyon 1, UMRESTTE, F-69000, Lyon, France. Electronic address: vivian.viallon@ifsttar.fr.
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