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Title:

Median Crossover Crashes in the Vicinity of Interchanges

Accession Number:

01153398

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States

Abstract:

While not accounting for a significant proportion of overall crashes, median crossover crashes generally do account for a significant proportion of interstate fatalities. When addressing the specific location of median crossover crashes, previous research has noted that median crossover crashes appear to increase in the vicinity of interchanges. Due to the seriousness of median crossover crashes and the desire to identify trends in Utah, the need existed to evaluate the impact of median crossover crashes and to determine if median crossover crashes do increase in the vicinity of interchanges. The purpose of this research, therefore, was to determine the role that the interchanges play in contributing to median crossover crashes. To address the purpose and need, 14 years of crash data spanning the years 1992 through 2005 on Interstates 15, 70, 80, 84, and 215 in Utah were used to determine overall characteristics of median crossover crashes and the relationship between median crossover crashes and other types of crashes. Using a chi-square goodness of fit test, the distributions of median crossover crashes and all types of interstate crashes in the vicinity of interchanges were compared. This analysis showed that 90 percent of rural median crossover crashes occur within 3.0 miles of an interchange, and 90 percent of urban median crashes occur within 1.0 mile of an interchange. Furthermore, rural median crossover crashes occur in generally the same distribution around the interchange as all types of crashes, while urban median crossover crashes tend to take place further from the interchange.

Monograph Accession #:

01147878

Report/Paper Numbers:

10-2150

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Winters, Katherine E
Schultz, Grant G

Pagination:

14p

Publication Date:

2010

Conference:

Transportation Research Board 89th Annual Meeting

Location: Washington DC, United States
Date: 2010-1-10 to 2010-1-14
Sponsors: Transportation Research Board

Media Type:

DVD

Features:

Figures (5) ; References (16) ; Tables (3)

Uncontrolled Terms:

Median crossovers

Geographic Terms:

Utah

Subject Areas:

Data and Information Technology; Highways; Safety and Human Factors; I81: Accident Statistics; I82: Accidents and Transport Infrastructure

Source Data:

Transportation Research Board Annual Meeting 2010 Paper #10-2150

Files:

TRIS, TRB

Created Date:

Jan 25 2010 10:59AM