00469571

Component

http://onlinepubs.trb.org...trr/1987/1132/1132-002.pdf

Methods for evaluating traffic operations improvements for freeway reconstruction alternatives are discussed. It is asserted that traffic simulation provides a better approach to such analyses than the traditional Highway Capacity Manual (HCM). Several traffic simulation models are described. An application involving a congressionally mandated study of capacity improvements for a bridge in the Washington, D.C., area is described, for which the INTRAS freeway simulation model was chosen as the analysis tool. Required modifications to the INTRAS model and calibration and validation activities are described. In conclusion there is a description of the simulation experiment of the existing eastbound condition and five alternatives and the existing westbound condition and one alternative. The most interesting finding in this study was that an expansion of the eastbound span from three to five lanes performed no better than did several four-lane alternatives.

Publication of this paper sponsored by Committee on Freeway Operations. 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

01418148

pp 8-13

1987

Transportation Research Record

0309045096

Print

Figures (8) ; References (8) ; Tables (2)

Alternatives analysis; Calibration; Freeways; Highway capacity; Improvements; Reconstruction; Traffic simulation; Urban areas; Validation

Highways; Operations and Traffic Management; I73: Traffic Control

TRIS, TRB, ATRI

Jul 31 1988 12:00AM

• A METHODOLOGY FOR QUANTIFYING URBAN FREEWAY CONGESTION
• A PROCEDURE FOR THE ASSESSMENT OF TRAFFIC IMPACTS DURING FREEWAY RECONSTRUCTION
• A REVIEW OF CANDIDATE FREEWAY-ARTERIAL CORRIDOR TRAFFIC MODELS
• COMMUTER PERCEPTIONS OF TRAFFIC CONGESTION DURING THE RECONSTRUCTION OF I-45 NORTH FREEWAY IN HOUSTON
• DELAY ANALYSIS FOR FREEWAY CORRIDOR SURVEILLANCE, COMMUNICATION, AND CONTROL SYSTEMS
• FREEWAY OPERATIONS AND THE CUSP CATASTROPHE: AN EMPIRICAL ANALYSIS
• FREEWAY SIMULATION MODELS REVISITED
• MITIGATING CORRIDOR TRAVEL IMPACTS DURING RECONSTRUCTION: AN OVERVIEW OF LITERATURE, EXPERIENCES, AND CURRENT RESEARCH
• TRAFFIC DETECTOR ERRORS AND DIAGNOSTICS
• USE OF THE FREQ8PL MODEL TO EVALUATE AN EXCLUSIVE BUS-HIGH-OCCUPANCY-VEHICLE LANE ON NEW JERSEY ROUTE 495