Best Practices in Maximizing Traffic Flow on Existing Highway Facilities
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Scan Team Report NCHRP Project 20-68A, Scan 08-02 Best Practices In Maximizing Traffic Flow On Existing Highway Facilities Supported by the National Cooperative Highway Research Program August 2011 The information contained in this report was prepared as part of NCHRP Project 20-68A U.S. Domestic Scan, National Cooperative Highway Research Program. SPECIAL NOTE: This report IS NOT an official publication of the National Cooperative Highway Research Program, Transportation Research Board, National Research Council, or The National Academies. Acknowledgments The work described in this document was conducted as part of NCHRP Project 20-68A, the U.S. Domestic Scan program. This program was requested by the American Association of State Highway and Transportation Officials (AASHTO), with funding provided through the National Cooperative Highway Research Program (NCHRP). The NCHRP is supported by annual voluntary contributions from the state departments of transportation. Additional support for selected scans is provided by the U.S. Federal Highway Administration and other agencies. The purpose of each scan and of Project 20-68A as a whole is to accelerate beneficial innovation by facilitating information sharing and technology exchange among the states and other transportation agencies, and identifying actionable items of common interest. Experience has shown that personal contact with new ideas and their application is a particularly valuable means for such sharing and exchange. A scan entails peer-to-peer discussions between practitioners who have implemented new practices and others who are able to disseminate knowledge of these new practices and their possible benefits to a broad audience of other users. Each scan addresses a single technical topic selected by AASHTO and the NCHRP 20-68A Project Panel. Further information on the NCHRP 20-68A U.S. Domestic Scan program is available at http://144.171.11.40/cmsfeed/TRBNetProjectDisplay.asp?ProjectID=1570. This report was prepared by the scan team for Scan 08-02, Best Practices in Maximizing Traffic Flow on Existing Highway Facilities, whose members are listed below. Scan planning and logistics are managed by Arora and Associates, P.C.; Harry Capers is the Principal Investigator. NCHRP Project 20-68A is guided by a technical project panel and managed by Andrew C. Lemer, PhD, NCHRP Senior Program Officer. Ted Trepanier, Washington State DOT, AASHTO Co-chair Gregory Jones, FHWA Resource Center, FHWA Co-chair Mark Demidovich, PE, Georgia DOT Lee A. Nederveld, Michigan DOT Tony S. Abbo, PE, PTOE, New Mexico DOT Mike Pillsbury, PE, New Hampshire DOT Jeanne Acutanza, PE, CH2M HILL BEST PRACTICES IN MAXIMIZING TRAFFIC FLOW ON EXISTING HIGHWAY FACILITIES Disclaimer The information in this document was taken directly from the submission of the authors. The opinions and conclusions expressed or implied are those of the scan team and are not necessarily those of the Transportation Research Board, the National Research Council, or the program sponsors. This document has not been edited by the Transportation Research Board. Scan 08-02 Best Practices In Maximizing Traffic Flow On Existing Highway Facilities REQUESTED BY THE American Association of State Highway and Transportation Officials PREPARED BY Ted Trepanier, Tony S. Abbo, PE, Washington State DOT, AASHTO Co-chair PTOE, New Mexico DOT Gregory Jones, Mike Pillsbury, PE, FHWA Resource Center, FHWA Co-chair New Hampshire DOT Mark Demidovich, PE, Jeanne Acutanza, PE, Georgia DOT CH2M HILL Lee A. Nederveld, Michigan DOT SCAN MANAGEMENT Arora and Associates, P.C. Lawrenceville, NJ August 2011 The information contained in this report was prepared as part of NCHRP Project 20 68A U.S. Domestic Scan, National Cooperative Highway Research Program. SPECIAL NOTE: This report IS NOT an official publication of the National Cooperative Highway Research Program, Transportation Research Board, National Research Council, or The National Academies. BEST PRACTICES IN MAXIMIZING TRAFFIC FLOW ON EXISTING HIGHWAY FACILITIES 6 TABLE OF CONTENTS Table of Contents Abbreviations and Acronyms............................................................................................V Executive Summary................................................................................................................ ES-1 Introduction.................................................................................................................................ES-1 Scan Purpose and Scope............................................................................................................. ES-2 Summary of Findings and Recommendations...........................................................................ES-3 Recommendations....................................................................................................................... ES-5 Implementation...........................................................................................................................ES-6 1.0 Overview Background............................................................................................. 1-1 Background................................................................................................................................ 1-1 Objectives................................................................................................................................... 1-3 Scan Approach ...........................................................................................................................1-4 2.0 Host Agencies.............................................................................................................. 2-1 Northern Virginia......................................................................................................................2-3 Overview..............................................................................................................................2-3 Findings............................................................................................................................... 2-5 Maryland....................................................................................................................................2-6 Overview..............................................................................................................................2-6 Findings............................................................................................................................... 2-7 District of Columbia.................................................................................................................. 2-7 New Jersey.................................................................................................................................2-8 TRANSCOM........................................................................................................................ 2-8 Port Authority of New York and New Jersey.................................................................... 2-9 New Jersey Turnpike Authority........................................................................................ 2-10 New Jersey DOT................................................................................................................. 2-10 Minneapolis-St Paul, Minnesota.............................................................................................. 2-11 Overview..............................................................................................................................2-11 Findings...............................................................................................................................2-12 California................................................................................................................................... 2-12 Overview..............................................................................................................................2-12 Findings............................................................................................................................... 2-15 Seattle, Washington.................................................................................................................. 2-15 Overview..............................................................................................................................2-15 Findings...............................................................................................................................2-15 INRIX ........................................................................................................................................2-16 I 3.0 Observations and Key Findings..............................................................................3-1 Strategies for Maximizing Traffic Flow....................................................................................3-1 Use of Shoulders as Lanes..................................................................................................3-1 Congestion Pricing/HOT Lanes..........................................................................................3-6 Traffic Smoothing................................................................................................................3-17 Real-Time Travel Management/Information.....................................................................3-23 Coordination of Construction Activity..............................................................................