00662862

Component

http://onlinepubs.trb.org...trr/1994/1429/1429-005.pdf

https://scholar.google.co...osca&publication_year=1994

Procedures that provide for a quantitative calculation of system benefits derived from both infrastructure and mobility projects are described. The procedures were used by the Capital District Transportation Committee (CDTC) in Albany, New York, as part of a comprehensive project evaluation process in the development of its 1993-98 Transportation Improvement Program. The technique involves the use of CDTC's regional travel simulation model to estimate system-level impacts of transportation actions; these impacts include changes in travel time, delay, excess delay, operating costs, accident costs, and vehicular emissions. Metropolitan transportation organizations typically use such calculations to examine the value of mobility projects (highway widenings, signal system improvements, new highway or transit facilities, and other projects that add capacity), but CDTC uses similar calculations to capture the system benefit of repair or replacement of bridges, highways, and transit equipment. This method allows for head-to-head comparison of mobility improvement and infrastructure repair projects. In the CDTC process, the system value of a bridge, highway, or transit service renewal proposal is estimated by simulating system conditions both with and without the facility or service proposed for repair or replacement. The difference between system conditions with the facility (or equipment) in place and with the facility removed is then prorated to reflect the percentage of the natural life of the facility that is extended by the project. For example, if a facility's physical life is 50 years and the repair extends its life 20 years, the system benefit of the repair project is calculated at 40 percent of the calculated system value of the facility.

This paper appears in Transportation Research Record No. 1429, Multimodal Priority Setting and Application of Geographic Information Systems. 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

01403268

English

p. 30-35

1994

Transportation Research Record

0309055075

Figures (3) ; References (2) ; Tables (2)

Alternatives analysis; Benefits; Equipment replacement; Improvements; Infrastructure; Mobility; Project management; Quantitative analysis; Repairing

Transportation Improvement Program

Projects; Repairs

Administration and Management; Highways; Maintenance and Preservation; Planning and Forecasting; Public Transportation; I10: Economics and Administration; I21: Planning of Transport Infrastructure; I72: Traffic and Transport Planning

TRIS, TRB, ATRI

Jul 20 1994 12:00AM

• APPLICATION OF GEOGRAPHIC INFORMATION SYSTEMS IN PLANNING TRANSIT SERVICES FOR PEOPLE WITH DISABILITIES
• BUILDING TRANSPORTATION ANALYSIS ZONES USING GEOGRAPHIC INFORMATION SYSTEMS
• COMPARING MULTIMODAL ALTERNATIVES IN MAJOR TRAVEL CORRIDORS
• COMPARISON OF TWO SIGN INVENTORY DATA COLLECTION TECHNIQUES FOR GEOGRAPHIC INFORMATION SYSTEMS
• DEVELOPING A METHOD OF MULTIMODAL PRIORITY SETTING FOR TRANSPORTATION PROJECTS IN THE SAN FRANCISCO BAY AREA IN RESPONSE TO OPPORTUNITIES IN ISTEA
• GEOGRAPHIC INFORMATION SYSTEM DECISION SUPPORT SYSTEM FOR PAVEMENT MANAGEMENT
• GEOGRAPHIC INFORMATION SYSTEM ENVIRONMENT FOR TRANSPORTATION MANAGEMENT SYSTEMS
• GEOGRAPHIC INFORMATION SYSTEMS APPLICATIONS TO TRANSPORTATION CORRIDOR PLANNING
• GIS INTEGRATED PAVEMENT AND INFRASTRUCTURE MANAGEMENT IN URBAN AREAS
• HIGH-PRECISION PRIORITIZATION USING ANALYTIC HIERARCHY PROCESS: DETERMINING STATE HPMS COMPONENT WEIGHTING FACTORS
• MULTIMODAL PROJECT EVALUATION: A COMMON FRAMEWORK, DIFFERENT METHODS