Creating a composite road safety performance index by a hierarchical fuzzy TOPSIS approach

Research output: Contribution to report/book/conference proceedingsIn-proceedings paper

Authors

  • Qiong Bao
  • Da Ruan
  • Yongjun Shen
  • Elke Hermans

Documents & links

Abstract

With the increasing public awareness of the complexity of road safety phenomenon, much more detailed aspects of crash and injury causation rather than only crash data (e.g., the number of road fatalities) are extensively investigated in the current road safety research. Safety performance indicators (SPIs), which are causally related to the number of crashes or to the injury consequences of a crash, are thus rapidly developed and increasingly used. Furthermore, to measure the multidimensional concept of road safety which cannot be captured by a single indicator, the exploration of a composite road safety performance index is attractive and desirable. This study proposes a hierarchical fuzzy TOPSIS method to combine the multilayer SPIs into one overall index by incorporating experts’ opinions. Using the number of road fatalities per million inhabitants as a relevant point of reference, the proposed method has proven valuable as an alternative way in creating a composite road safety performance index for a set of European countries. Meanwhile, it effectively handles experts' linguistic expressions instead of crisp values and takes the layered hierarchy of the indicators into account which is seldom considered in the current index research.

Details

Original languageEnglish
Title of host publicationProceedings of 2010 IEEE International Conference on Intelligent Systems and Knowledge Engineering
Place of PublicationBeijing, China
Pages458-463
Publication statusPublished - Nov 2010
Event2010 IEEE International Conference on Intelligent Systems and Knowledge Engineering - ISKE2010, Hangzhou, China
Duration: 15 Nov 201016 Nov 2010

Conference

Conference2010 IEEE International Conference on Intelligent Systems and Knowledge Engineering
CountryChina
CityHangzhou
Period2010-11-152010-11-16

Keywords

  • road safety performance indicators, composite index, multi-criteria decision making, TOPSIS, fuzzy set theory

ID: 97083