Title
A Stochastic Catastrophe Model Using Two-Fluid Model Parameters To Investigate Traffic Safety On Urban Arterials
Keywords
Catastrophe model; Pro-active safety; Two-fluid model; Urban arterials
Abstract
During the last few decades, the two-fluid model and its two parameters have been widely used in transportation engineering to represent the quality of operational traffic service on urban arterials. Catastrophe models have also often been used to describe traffic flow on freeway sections. This paper demonstrates the possibility of developing a pro-active network screening tool that estimates the crash rate using a stochastic cusp catastrophe model with the two-fluid model's parameters as inputs. The paper investigates the analogy in logic behind the two-fluid model and the catastrophe model using straightforward graphical illustrations. The paper then demonstrates the application of two-fluid model parameters to a stochastic catastrophe model designed to estimate the level of safety on urban arterials. Current road safety management, including network safety screening, is post-active rather than pro-active in the sense that an existing hotspot must be identified before a safety improvement program can be implemented. This paper suggests that a stochastic catastrophe model can help us to become more pro-active by helping us to identify urban arterials that currently show an acceptable level of safety, but which are vulnerable to turning into crash hotspots. We would then be able to implement remedial actions before hotspots develop. Crown Copyright © 2011 Published by Elsevier Ltd. All rights reserved.
Publication Date
5-1-2011
Publication Title
Accident Analysis and Prevention
Volume
43
Issue
3
Number of Pages
1267-1278
Document Type
Article
Personal Identifier
scopus
DOI Link
https://doi.org/10.1016/j.aap.2011.01.009
Copyright Status
Unknown
Socpus ID
79952441124 (Scopus)
Source API URL
https://api.elsevier.com/content/abstract/scopus_id/79952441124
STARS Citation
Park, Peter Y. and Abdel-Aty, Mohamed, "A Stochastic Catastrophe Model Using Two-Fluid Model Parameters To Investigate Traffic Safety On Urban Arterials" (2011). Scopus Export 2010-2014. 3529.
https://stars.library.ucf.edu/scopus2010/3529