Application of proximal surrogate indicators for safety evaluation: A review of recent developments and research needs. (December 2017)

• Record Type: Journal Article
• Authors: Mahmud, S.M. Sohel; Ferreira, Luis; Hoque, Md. Shamsul; Tavassoli, Ahmad
• Is Part Of: IATSS research. Volume 41:Number 4(2017)
• Page Start: 153
• Page End: 163
• Publication Date: 2017-12
• Subjects: Safety evaluation -- Traffic conflict -- Surrogate -- Proximal -- Indicators; Traffic safety -- Periodicals; Transportation and state -- Periodicals; Verkeersveiligheid; Internationale organisaties; Traffic safety; Transportation and state; Periodicals; 363.1256
• DOI: 10.1016/j.iatssr.2017.02.001
• Languages: English
• ISSNs: 0386-1112

Abstract

Abstract: Although there have been a number of recent reviews on the use of traffic conflict techniques (TCTs), none have focused on the use of proximal surrogate indicators. This paper comprehensively reviews the development and application of proximal surrogate safety indicators to address this gap. There is a particular focus on more recent advancements in the application of such indicators. For each of the main indicators reviewed, the paper provides a synthesis of the main guiding principles, as well as the most prominent features, including critical or threshold values used in the past. In addition, the main advantages and disadvantages of the reviewed indicators are highlighted. Finally, a number of research gaps are identified together with recommendations for potentially useful avenues of future research. Highlights: The study has identified 38 major proximity indicators used in the past. A summary of major proximity indicators with their main limitations and advantages are provided. Their suitability for evaluating particular crash types is also highlighted. Resultant issues and future research directions are disussed. Computational equations for major indicators are given as an appendix.