Effects of access, geometric design and heterogeneous traffic on safety performance of divided multilane highways in India

Mitra, Sudeshna, Haque, Md. Mazharul, & King, Mark J. (2017) Effects of access, geometric design and heterogeneous traffic on safety performance of divided multilane highways in India. Journal of Transportation Safety and Security, 9(sup1), pp. 216-235.

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Safety of the National Highways (NHs) has been a major concern in India. Using five years of crash data from a 65 km stretch of a divided multilane NH, this study employs random parameter panel data models to identify factors affecting total crashes, rear end and head on crashes. Besides geometric design elements, this study focuses on the effect of access management strategies such as provision of service lane and presence of median opening on crash types. To capture the effect of mixed traffic on crash occurrence, vehicle composition is considered in addition to Average Daily Traffic (ADT).

Results suggest that the effects of segment length and ADT are generally fixed and consistent across crash types, but there exists variation in safety performance of horizontal alignment, access management strategies and type of vehicles. While the coefficient for proportion of motorized two-wheelers is found to be random for rear-end crashes, higher proportions of truck traffic are found to be always associated with higher head-on collisions. While segments with service lanes are associated with fewer rear-end and head-on crashes, median opening presence is found to increase both of these crash types even though the effect on total crashes is random.

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ID Code: 98794
Item Type: Journal Article
Refereed: Yes
Additional URLs:
Keywords: crash type model, crash maneuver, multilane highway, access management, heterogeneous traffic, random parameter panel count model
DOI: 10.1080/19439962.2016.1237600
ISSN: 1943-9970
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > CIVIL ENGINEERING (090500) > Transport Engineering (090507)
Divisions: Current > Research Centres > Centre for Accident Research & Road Safety - Qld (CARRS-Q)
Current > QUT Faculties and Divisions > Faculty of Health
Current > Institutes > Institute of Health and Biomedical Innovation
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2016 Taylor & Francis
Deposited On: 12 Sep 2016 23:29
Last Modified: 08 Jul 2017 16:33

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