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Title:

Methodology for Systematically Comparing Longitudinal Barrier Performance

Accession Number:

01514495

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States

Abstract:

Understanding and correctly representing the possible outcomes of a vehicle interacting with a longitudinal barrier is essential to understanding the performance of each longitudinal barrier, comparing barriers and selecting situation-appropriate barriers. Mechanistic models do not capture all possible crash scenarios. This paper discusses an empirical method to tabulate the vehicles which are penetrating, rolling over, or vaulting longitudinal barriers alongside the vehicles which are rolling over after redirection. The severity of the barrier crash is also captured. Crash data collected and tabulated this way have been employed in the third version of the Roadside Safety Analysis Program (RSAPv3) alongside the mechanistic methods to ensure all possible crash outcomes are accounted for in the analysis. An example problem analysis using bridge railings has been compared with crash data available in the literature. The results obtained using this methodology appear to be reasonable given the ambiguity in crash data. This methodology will help researchers and policy makers to review crash data in a single table with the severity and performance of hazards alongside each other. An engineer has the ability to make better informed decisions about the severity and performance of barriers using this type of tabulation. This approach will also allow for the results of RSAPv3 to be based on observable crash data rather than subjective severity indexes.

Supplemental Notes:

This paper was sponsored by TRB committee AFB20 Roadside Safety Design.

Monograph Accession #:

01503729

Report/Paper Numbers:

14-2904

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Ray, Malcolm H
Carrigan, Christine E

Pagination:

13p

Publication Date:

2014

Conference:

Transportation Research Board 93rd Annual Meeting

Location: Washington DC
Date: 2014-1-12 to 2014-1-16
Sponsors: Transportation Research Board

Media Type:

Digital/other

Features:

References; Tables

Uncontrolled Terms:

Cable barriers; Safety shape barriers

Subject Areas:

Bridges and other structures; Design; Highways; Safety and Human Factors; I85: Safety Devices used in Transport Infrastructure

Source Data:

Transportation Research Board Annual Meeting 2014 Paper #14-2904

Files:

TRIS, TRB, ATRI

Created Date:

Jan 27 2014 3:00PM