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Title:

Comparative Analysis of Injury Severity Resulting from Rural Intersection Crashes Under Different Lighting Conditions in Alabama

Accession Number:

01657963

Record Type:

Component

Abstract:

The research described in this paper explored the factors contributing to the injury severity resulting from rural intersection crashes in Alabama under different lighting conditions. Given the occurrence of a crash, separate random parameter logit models of injury severity (with possible outcomes of fatal, major, minor, and possible or no injury) were estimated for different lighting conditions: i. dark and ii. lighted (including daylight). The estimated models identified a variety of statistically significant factors influencing the injury severities resulting from crashes occurring under dark and lighted/daylight conditions. According to these models, some variables were found to be significant only in one model (dark or lighted/daylight) but not in the other one. For example, variables such as female drivers, presence of no opposing lane separations, and presence of stop signs were found significant only in the dark intersection model. On the other hand, variables such as old drivers, presence of signaling devices, and posted speed limit 40 mph or lower were found significant only in the lighted/daylight model. In addition, some variables (such as, driver under influence of alcohol, roadway curves, etc.) were found significant in both models. Estimation findings also showed that two parameters in each model could be modeled as random parameters indicating their varying influences on the injury severity due to unobserved effects. Based on the results obtained, this paper discusses the effects of different variables on injury severities resulting from crashes at rural intersections under different lighting conditions and their possible explanations.

Supplemental Notes:

This paper was sponsored by TRB committee ANB25 Standing Committee on Highway Safety Performance.

Report/Paper Numbers:

18-00975

Language:

English

Authors:

Islam, Samantha
Benjamin, Burton

Pagination:

22p

Publication Date:

2018

Conference:

Transportation Research Board 97th Annual Meeting

Location: Washington DC, United States
Date: 2018-1-7 to 2018-1-11
Sponsors: Transportation Research Board

Media Type:

Digital/other

Features:

Figures; References; Tables

Geographic Terms:

Alabama

Subject Areas:

Highways; Operations and Traffic Management; Safety and Human Factors

Source Data:

Transportation Research Board Annual Meeting 2018 Paper #18-00975

Files:

TRIS, TRB, ATRI

Created Date:

Jan 8 2018 10:14AM