Analysis of Intersection Traffic Safety in the City of San Antonio, 2013–2017

Khondoker Billah, Qasim Adegbite, Hatim O. Sharif, Samer Dessouky and Lauren Simcic
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Khondoker Billah: Department of Civil and Environmental Engineering, University of Texas at San Antonio, San Antonio, TX 78249, USA
Qasim Adegbite: Department of Civil and Environmental Engineering, University of Texas at San Antonio, San Antonio, TX 78249, USA
Hatim O. Sharif: Department of Civil and Environmental Engineering, University of Texas at San Antonio, San Antonio, TX 78249, USA
Samer Dessouky: Department of Civil and Environmental Engineering, University of Texas at San Antonio, San Antonio, TX 78249, USA
Lauren Simcic: The City of San Antonio, San Antonio, TX 78205, USA

Sustainability, 2021, vol. 13, issue 9, 1-18

Abstract: An understanding of the contributing factors to severe intersection crashes is crucial for developing countermeasures to reduce crash numbers and severity at high-risk crash locations. This study examined the variables affecting crash incidence and crash severity at intersections in San Antonio over a five-year period (2013–2017) and identified high-risk locations based on crash frequency and injury severity using data from the Texas Crash Record and Information System database. Bivariate analysis and binary logistic regression, along with respective odds ratios, were used to identify the most significant variables contributing to severe intersection crashes by quantifying their association with crash severity. Intersection crashes were predominantly clustered in the downtown area with relatively less severe crashes. Males and older drivers, weekend driving, nighttime driving, dark lighting conditions, grade and hillcrest road alignment, and crosswalk, divider and marked lanes used as traffic control significantly increased crash severity risk at intersections. Prioritizing resource allocation to high-risk intersections, separating bicycle lanes and sidewalks from the roadway, improving lighting facilities, increasing law enforcement activity during the late night hours of weekend, and introducing roundabouts at intersections with stops and signals as traffic controls are recommended countermeasures.

Keywords: intersection crashes; fatalities; CRIS; logistic regression; bivariate analysis (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2021
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