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Safety Evaluation for Signalized Intersections Using GIS Techniques and Statistic Analysis

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Abstract:

This paper presents a systematic GIS-based method to identify and evaluate signalized intersections for purposes of transportation safety planning. The intersections were analyzed and compared based on the crash average hazard index which is the average of five safety measures: total number of crashes, total number of injury and fatal crashes, total crash exposure rate, injury/fatal exposure rate, and weighted hazard index (WHI). The GIS technique along with statistics analysis is utilized to estimate the signalized intersection’s risk distribution in terms of the averaged hazard index. It results in priority ranking of signalized intersections from the most dangerous to the least dangerous hazard levels. The method and results can assist engineers, planners and decision-makers in identifying critical intersections with potential for safety improvement.

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Periodical:

Applied Mechanics and Materials (Volumes 178-181)

Pages:

2725-2730

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.178-181.2725

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Online since:

May 2012

Authors:

Cui Ping Zhang, Xue Dong Yan*, Mei Wu An, Bin Wang, Hui Zhao

Keywords:

Crash Hazard Index, GIS, Safety Analysis, Signalized Intersection

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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DOI: 10.1080/13658810310001629619

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