Safety Impact Analysis of Lane Conversion on Selected Highway Corridor

Authors

Swathy P Mohan
Jyothi Engineering College, Department of Civil Engineering, Thrissur, Kerala, India
Archana S
Jyothi Engineering College, Department of Civil Engineering, Thrissur, Kerala, India
Ebin Sam S
National Transportation Planning and Research Center, Traffic Safety Division, Trivandrum, Kerala
DOI: https://doi.org/10.21467/proceedings.112.59

Synopsis

The safety impact analysis of a widened corridor stretch of NH 66 was carried out in this study. A before and after black spot analysis was conducted using Arc Map 10.6 to identify significant hotspots using spatial joining and Getis Ord analysis. Two Poisson regression models were formulated for the weighted sum of fatal and grievous accidents for both pre lane widening as well as post lane widening conditions. The weighted sum of accidents showed a significant relationship with AADT value and black spot segment length in both models. It was found that 40-50 % reduction of crashes due to the lane conversion was estimated at a selected AADT range.

ICCESP 2021
Publication
Proceedings of International Web Conference in Civil Engineering for a Sustainable Planet
PDF
Published
April 11, 2021
Series
AIJR Proceedings
Online ISSN
2582-3922
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