Assessing Non-Motorist Safety In Motor Vehicle Crashes – A Copula-Based Approach To Jointly Estimate Crash Location And Injury Severity

Author

Robert A. Marcoux, University of Central FloridaFollow

Keywords

Non-motorist, Crash severity, Crash location, Copula model, Temporal heterogeneity

Abstract

Recognizing the distinct non-motorist injury severity profiles by crash location (segment or intersection), we propose a joint modeling framework to study crash location type and non-motorist injury severity as two dimensions of the severity process. We employ a copula-based joint framework that ties the crash location type (represented as a binary logit model) and injury severity (represented as a generalized ordered logit model) through a closed form flexible dependency structure to study the injury severity process. The data for our analysis is drawn from the Central Florida region for the years of 2015 to 2021. The model system explicitly accounts for temporal heterogeneity across the two dimensions. A comprehensive set of independent variables including non-motorist user characteristics, driver and vehicle characteristics, roadway attributes, weather and environmental factors, temporal and sociodemographic factors are considered for the analysis. We also conducted an elasticity analysis to show the actual magnitude of the independent variables on non-motorist injury severity at the two locations. The results highlight the importance of examining the effect of various independent variables on non-motorist injury severity outcome by different crash locations.

Completion Date

2023

Semester

Fall

Committee Chair

Eluru, Naveen

Degree

Master of Science (M.S.)

College

College of Engineering and Computer Science

Department

Civil, Environmental, and Construction Engineering

Degree Program

Civil Engineering; Transportation Systems Track

Format

application/pdf

Identifier

DP0028060

URL

https://purls.library.ucf.edu/go/DP0028060

Language

English

Release Date

December 2024

Length of Campus-only Access

1 year

Access Status

Masters Thesis (Campus-only Access)

Campus Location

Orlando (Main) Campus

STARS Citation

Marcoux, Robert A., "Assessing Non-Motorist Safety In Motor Vehicle Crashes – A Copula-Based Approach To Jointly Estimate Crash Location And Injury Severity" (2023). Graduate Thesis and Dissertation 2023-2024. 68.
https://stars.library.ucf.edu/etd2023/68