Development of crash modification factors for Intersections in Toowoomba city

Al-Marafi, Mohammad Nour and Somasundaraswaran, Kathirgamalingam and Bullen, Frank (2021) Development of crash modification factors for Intersections in Toowoomba city. International Journal of Urban Sciences, 25 (1). pp. 104-123. ISSN 1226-5934


Abstract

This research outlines the analytical approaches that may be employed to recommend multiple treatments for application to improve safety level at hazardous intersections in regional areas. Data from 106 intersections in the regional city of Toowoomba, Queensland, Australia were used in modelling and subsequent analysis. Specifically, crash prediction models were developed to estimate crash modification factors that could be used to propose remedial measures. A total of sixteen geometric and operational conditions were used as explanatory variables including the number of legs at an intersection, the availability of entering and exiting via through lanes, the presence of left-turning lanes, right-turning lanes, slip lanes, median islands, traffic control, and speed limits on the feed roads. The Empirical Bayes approach was employed to identify five hazardous intersections in Toowoomba for further investigation. The four most suitable techniques for estimating combined crash modification factors were reviewed and then used to propose effective road safety measures for the five selected hazardous intersections. Finally, this research suggests four future areas worthy of further investigation.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Faculty/School / Institute/Centre: Current - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying (1 Jul 2013 -)
Faculty/School / Institute/Centre: Current - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying (1 Jul 2013 -)
Date Deposited: 19 Oct 2020 04:13
Last Modified: 22 Apr 2021 00:51
Uncontrolled Keywords: Crash prediction models, road safety measures, Empirical-Bayes method, crash modification factors, hazardous intersections
Fields of Research (2008): 09 Engineering > 0905 Civil Engineering > 090507 Transport Engineering
Fields of Research (2020): 40 ENGINEERING > 4005 Civil engineering > 400512 Transport engineering
Socio-Economic Objectives (2008): B Economic Development > 88 Transport > 8801 Ground Transport > 880104 Rail Safety
Identification Number or DOI: https://doi.org/10.1080/12265934.2020.1743739
URI: http://eprints.usq.edu.au/id/eprint/39927

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