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Sustainability 2017, 9(12), 2331; doi:10.3390/su9122331

Identification of Critical Factors for Non-Recurrent Congestion Induced by Urban Freeway Crashes and Its Mitigating Strategies

Department of Urban Planning and Engineering, Yeungnam University, Gyeongsan 38541, Korea
Received: 21 November 2017 / Revised: 11 December 2017 / Accepted: 13 December 2017 / Published: 14 December 2017
(This article belongs to the Section Sustainable Urban and Rural Development)
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Abstract

Given the extreme difficulty of estimating crash likelihoods, the most important aspect of the development of congestion management strategies is the identification of the factors that affect non-recurrent congestion caused by crashes. Such factors must be identified to develop crash management strategies and congestion management strategies. The objectives of this study are to identify causal factors that affect non-recurrent congestion and to propose some operational strategies for mitigating crash-induced non-recurrent traffic congestion. To achieve these objectives, a case study was conducted to identify spatiotemporal non-recurrent congestion regions using a previously developed method based on historical inductance loop detector data collected from six major freeways in Orange County, California. Based on the case study results, potentially significant factors in non-recurrent congestion were identified using the Cox proportional hazard model. Additionally, with the factors identified as significant, operational strategies were proposed for mitigating non-recurrent congestion due to freeway crashes. View Full-Text
Keywords: urban freeway; traffic crash; non-recurrent congestion; survival analysis; Cox model urban freeway; traffic crash; non-recurrent congestion; survival analysis; Cox model
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Chung, Y. Identification of Critical Factors for Non-Recurrent Congestion Induced by Urban Freeway Crashes and Its Mitigating Strategies. Sustainability 2017, 9, 2331.

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