01776557

Monograph

http://www.trb.org/Main/Blurbs/182153.aspx

This report presents the results of research to develop improved design guidelines for resurfacing, restoration, and rehabilitation (3R) projects. These guidelines were developed to replace the older guidance presented in Transportation Research Board (TRB) Special Report 214. The guidelines were developed based on the results of a literature review, a highway agency survey, discussions with design and safety practitioners, and review of the results of benefit–cost analysis results for design improvement type typically included in 3R projects. The guidelines focus on a key design decision concerning which potential 3R projects should be resurfaced with, and which potential 3R projects should be resurfaced without, accompanying design improvements. The guidelines take a performance-based approach to this decision considering existing roadway and roadside features, traffic volumes, and crash history. The crash reduction effectiveness of potential design improvements is based primarily on the crash prediction methods from the AASHTO Highway Safety Manual. The performance-based approach uses benefit–cost analysis to focus the limited funding available for design improvements on the projects where the greatest crash reduction can be achieved. For any given level of expenditure on design improvements in 3R projects, the performance-based approach should provide greater crash reduction benefits than any set of dimensional geometric design criteria.

Submitted January 2017.

NCHRP Project 15-50

English

166p

2021

NCHRP Web-Only Document

Final Report

Digital/other

Appendices; Figures; References; Tables

Benefit cost analysis; Cost effectiveness; Design; Guidelines; Highway maintenance; Interviewing; Literature reviews; Rehabilitation; Resurfacing; Safety; Surveys

Highway Safety Manual

Highways; Maintenance and Preservation

TRIS, TRB, ATRI

Jul 9 2021 11:13AM