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Title:

IN-SERVICE, PERFORMANCE-BASED ROADSIDE DESIGN POLICY: PRELIMINARY INSIGHTS FROM WASHINGTON STATE'S BRIDGE RAIL STUDY

Accession Number:

00802527

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States

Find a library where document is available


Order URL: http://worldcat.org/isbn/0309066980

Abstract:

Empirical insights about the performance of in-service roadside hardware are presented. A statistical study of bridge rail impacts on vehicular accident severity is presented from data collected in Washington State. In particular, concrete balusters and metal rails underperformed in comparison with the average bridge rail type, whereas thrie-beam guardrails and safety shape barriers had superior performance. The study presents a statistical framework that is particularly suitable for capturing real-world, unobserved effects that impact reported accident severity distribution. Policy sensitivities show systemwide savings through upgrading the underperforming rails to provide substantial performance. The combination of insights from the relative performance of bridge rails and the associated policy sensitivities provides direction for national policy on roadside design. In particular, the insights offer some strategic direction on inexpensive upgrades to state-level decision making.

Supplemental Notes:

This paper appears in Transportation Research Record No. 1720, Roadside Safety Features and Hydraulic, Hydrology, and Water Quality Issues.

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Shankar, V N
Albin, R B
Milton, J C
Nebergall, M

Pagination:

p. 72-79

Publication Date:

2000

Serial:

Transportation Research Record

Issue Number: 1720
Publisher: Transportation Research Board
ISSN: 0361-1981

ISBN:

0309066980

Features:

Figures (2) ; References (13) ; Tables (4)

Uncontrolled Terms:

Design upgrades; Safety shape barriers

Geographic Terms:

Washington (State)

Subject Areas:

Data and Information Technology; Design; Highways; Policy; Safety and Human Factors; I80: Accident Studies; I85: Safety Devices used in Transport Infrastructure

Files:

TRIS, TRB, ATRI

Created Date:

Nov 16 2000 12:00AM

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