00497260

Component

https://onlinepubs.trb.or...trcircular/362/362-003.pdf

This paper discusses the program developed by the Pennsylvania Department of Transportation to make changes in guide rail standards and warrants, which were determined to be deficient by an earlier task force study. The methodology employed was that found in Chapter VII of the AASHTO Guide for Selecting, Locating and Designing Traffic Barriers. This cost-effectiveness methodology addresses guide rail use based on encroachment frequencies, severity of impacting a warranting feature, embankment slopes and heights, and available clear zone. The formula employed in this method is discussed in the paper, along with the modifications incorporated for Pennsylvania-specific conditions. The paper concludes with a list of revisions to Pennsylvania's guide rail standards and warrants, which have been approved by the Federal Highway Administration and which are proving to be a cost-effective means of dealing with roadside safety problems in Pennsylvania.

This paper appears in Transportation Research Circular No. 362, Use of Benefit-Cost Analysis to Develop Roadside Safety Policies and Guidelines. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.

p. 19-21

1990-8

Transportation Research Circular

Digital/other

Cost effectiveness; Design standards; Formulas; Guardrail terminals; Guardrails; Improvements; Methodology; Roadside; Safety; Structural design; Warrants (Traffic control devices)

Pennsylvania

Pennsylvania

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

TRIS, TRB

Sep 30 1990 12:00AM

• LEGAL CONSIDERATIONS BASED ON BENEFIT-COST ANALYSIS
• OVERVIEW OF BENEFIT-COST METHODS
• ROADSIDE SAFETY: A NATIONAL PERSPECTIVE, JULY 1986
• USE OF BENEFIT-COST ANALYSIS TO DEVELOP ROADSIDE SAFETY POLICIES AND GUIDELINES