System-Specific Spare Bus Ratios
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T R A N S I T C O O P E R A T I V E R E S E A R C H P R O G R A M SPONSORED BY The Federal Transit Administration TCRP Synthesis 11 System-Specific Spare Bus Ratios A Synthesis of Transit Practice Transportation Research Board National Research Council TCRP OVERSIGHT AND PROJECT TRANSPORTATION RESEARCH BOARD EXECUTIVE COMMITTEE 1995 SELECTION COMMITTEE CHAIRMAN OFFICERS WILLIAM W. MILLAR Port Authority of Allegheny County Chair: LILLIAN C. LIBURDI, Director, Port Department, The Port Authority of New York and New Jersey Vice Chair: JAMES W. VAN LOBEN SELS, Director, California Department of Transportation MEMBERS Executive Director: ROBERT E. SKINNER, JR., Transportation Research Board, National Research SHARON D. BANKS Council AC Transit LEE BARNES MEMBERS Barwood, Inc GERALD L. BLAIR EDWARD H. ARNOLD, Chairman & President, Arnold Industries, Inc Indiana County Transit Authority SHARON D. BANKS, General Manager, Alameda-Contra Costa Transit District, Oakland, California MICHAEL BOLTON BRIAN J. L. BERRY, Lloyd Viel Berkner Regental Professor & Chair, Bruton Center for Development Capital Metro Studies, SHIRLEY A. DELIBERO University of Texas at Dallas New Jersey Transit Corporation DWIGHT M. BOWER, Director, Idaho Transportation Department ROD DIRIDON JOHN E. BREEN, The Nasser L. Al-Rashid Chair in Civil Engineering, The University of Texas at Austin Santa Clara County Transit District WILLIAM F. BUNDY, Director, Rhode Island Department of Transportation SANDRA DRAGGOO DAVID BURWELL, President, Rails-to-Trails Conservancy CATA A. RAY CHAMBERLAIN, Vice President, Freight Policy, American Trucking Associations, Inc (Past LOUIS J . GAMBACCINI Chair, 1993) SEPTA RAY W. CLOUGH, Nishkian Professor of Structural Engineering, Emeritus, University of California, DELON HAMPTON Berkeley Delon Hampton & Associates JAMES C. DELONG, Director of Aviation, Denver International Airport RICHARD R. KELLY JAMES N. DENN, Commissioner, Minnesota Department of Transportation Port Authority Trans-Hudson Corp. DENNIS J. FITZGERALD, Executive Director, Capital District Transportation Authority ALAN F. KIEPPER JAMES A. HAGEN, Chairman & CEO, CONRAIL New York City Transit Authority DELON HAMPTON, Chairman & CEO, Delon Hampton & Associates EDWARD N. KRAVITZ LESTER A. HOEL, Hamilton Professor, University of Virginia, Department of Civil Engineering The Flxible Corporation DON C. KELLY, Secretary and Commissioner of Highways, Transportation Cabinet, Kentucky ROBERT G. LINGWOOD ROBERT KOCHANOWSKI, Executive Director, Southwestern Pennsylvania Regional Planning BC Transit Commission MIKE MOBEY JAMES L. LAMMIE, President & CEO, Parsons Brinckerhoff, Inc Isabella County Transportation Comm CHARLES P. O'LEARY, JR., Commissioner, New Hampshire Department of Transportation DON S. MONROE JUDE W . P. PATIN, Secretary, Louisiana Department of Transportation and Development Pierce Transit CRAIG E. PHILIP, President, Ingram Barge Company PATRICIA S. NETTLESHIP DARREL RENSINK, Director, Iowa Department of Transportation The Nettleship Group, Inc JOSEPH M. SUSSMAN, JR East Professor and Professor of Civil and Environmental Engineering, ROBERT E. PAASWELL MassachusettsInstitute of Technology The City College of New York MARTIN WACHS, Director, Institute of Transportation Studies, Department of Urban Planning, JAMES P. REICHERT University ofCalifornia, Los Angeles Reichert Management Services DAVID N. WORMLEY, Dean of Engineering, Pennsylvania State University LAWRENCE G. REUTER HOWARD YERUSALIM, Vice President, KCI Technologics, Inc. WMATA VICKIE SHAFFER MIKE ACOTT, President, National Asphalt Pavement Association (ex officio) The Tri-State Transit Authority ROY A. ALLEN, Vice President, Research and Test Department, Association of American Railroads (ex B. R. STOKES officio) ATE Management & Service Co ANDREW H. CARD, JR., President & CEO, American Automobile Manufacturers Association (ex officio) MICHAEL S. TOWNES THOMAS J. DONOHUE, President and CEO, American Trucking Associations, Inc. (ex officio) Peninsula Transportation Dist Comm FRANCIS B. FRANCOIS, Executive Director, American Association of State Highway and Transportation FRANK J. WILSON Officials (ex officio) New Jersey DOT JACK R. GILSTRAP, Executive Vice President, American Public Transit Association (ex officio) ALBERT J. HERBERGER, Maritime Administrator, U.S. Department of Transportation (ex officio) EX OFFICIO MEMBERS DAVID R. HINSON, Federal Aviation Administrator, U.S Department of Transportation (ex officio) GORDON J. LINTON GORDON J. LINTON, Federal Transit Administrator, U.S.Department of Transportation (ex officio) FTA RICARDO MARTINEZ, Administrator, National Highway Traffic Safety Administration (ex officio) JACK R. GILSTRAP JOLENE M. MOLITORIS, Federal Railroad Administrator, U.S.Department of Transportation (ex officio) APTA DAVE SHARMA, Administrator, Research & Special Programs Administration, U.S. Department of RODNEY E. SLATER Transportation (ex officio) FHWA RODNEY E. SLATER, Federal Highway Administrator, U.S.Department of Transportation (ex officio) FRANCIS B. FRANCOIS ARTHUR E. WILLIAMS, Chief of Engineers and Commander, U.S. Army Corps of Engineers (ex officio) AASHTO ROBERT E. SKINNER, JR TRANSIT COOPERATIVE RESEARCH PROGRAM TRB Transportation Research Board Executive Committee Subcommittee for TCRP TDC EXECUTIVE DIRECTOR LESTER A. HOEL, University of Virginia FRANK J. CIHAK LILLIAN C. LIBURDI, Port Authority of New York and New Jersey (Chair) APTA GORDON J. LINTON, U.S. Department of Transportation WILLIAM W. MILLAR, Port Authority of Allegheny County SECRETARY ROBERT E. SKINNER, JR., Transportation Research Board ROBERT J. REILLY JOSEPH M. SUSSMAN, Massachusetts Institute of Technology TRB JAMES W. VAN LOBEN SELS, California Department of Transportation T R A N S I T C O O P E R A T I V E R E S E A R C H P R O G R A M Synthesis of Transit Practice 11 System-Specific Spare Bus Ratios JUDITH T. PIERCE Los Angeles, California and ELIZABETH K. MOSER Baltimore, Maryland TOPIC PANEL CHUCK BERKSHIRE, New Jersery Transit Corporation ANTONIO P. CHAVIRA, JR., Los Angeles County Metropolitan Transportation Authority PAUL C. GILLUM, JR., Washington Metropolitan Area Transit Authority CLARENCE I. GIULIANI, Giuliani and Associates, Inc. PHILIP R. HALE, Dallas Area Rapid Transit GEORGE I. IZUMI, Federal Transit Administration FRANK KOBLISKI, Central New York Regional Transportation Authority BRIAN H. O'LEARY, Municipality of Metropolitan Seattle PETER L. SHAW, Transportation Research Board TRANSPORTATION RESEARCH BOARD NATIONAL RESEARCH COUNCIL Research Sponsored by the Federal Transit Administration in Cooperation with the Transit Development Corporation NATIONAL ACADEMY PRESS Washington, D.C. 1995 TRANSIT COOPERATIVE RESEARCH PROGRAM The nation's growth and the need to meet mobility, environmental, TCRP SYNTHESIS 11 and energy objectives place demands on public transit systems. Current systems, some of which are old and in need of upgrading, Project SA-2 must expand service area, increase service frequency, and improve ISSN 1073-4880 efficiency to serve these demands Research is necessary to solve ISBN 0-309-05856-2 operating problems, to adapt appropriate new technologies from Library of Congress Catalog Card No 95-061015 other industries, and to introduce innovations into the transit industry. The Transit Cooperative Research Program (TCRP) serves Price $12.00 as one of the principal means by which the transit industry can develop innovative near-term solutions to meet demands placed on it The need for TCRP was originally identified in TRB Special NOTICE Report 213--Research for Public Transit: New Directions, published in 1987 and based on a study sponsored by the Federal Transit The project that is the subject of this report was a part of the Transit Administration (FTA). A report by the American Public Transit Cooperative Research Program conducted by the Transportation Association (APTA), Transportation 2000, also recognized the need Research Board with the approval of the Governing Board of the for local, problem-solving research. TCRP, modeled after the National Research Council. Such approval reflects the Governing longstanding and successful National Cooperative Highway Research Board's judgment that the project concerned is appropriate with Program, undertakes research and other technical activities in respect to both the purposes and resources of the National Research response to the needs of transit service providers. The scope of vice Council. configuration, equipment, facilities, operations, human resources, The members of the technical advisory panel selected to maintenance, policy, and administrative practices monitor this project and to review this report were chosen for TCRP was established under FTA sponsorship in July 1992. recognized scholarly competence and with due consideration for the Proposed by the U.S. Department of Transportation, TCRP was balance of disciplines appropriate to the project. The opinions and authorized as part of the Intermodal Surface Transportation conclusions expressed or implied are those of the research agency Efficiency Act of 1991 (ISTEA). On May 13, 1992, a memorandum that performed the research, and while they have been accepted as agreement outlining TCRP operating procedures was executed by the appropriate by the technical panel, they are not necessarily those of three cooperating organizations: FTA, the National Academy of the Transportation Research Board, the Transit Development Sciences, acting through the Transportation Research