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Table of ContentsA Message from the JTRF Co-General Editors Articles:Transportation Economics: Some Developments Over the Past 30 Years by Kenneth Button Modeling Willingness-to-Pay Values for Rural Bus Attributes Under Different Trip Purposes by C.V. Phanikumar and Bhargab Maitra Economic Effects of Lifting the Spring Load Restriction Policy in Minnesota by Brian Smalkoski, Ning Li, and David Levinson Operating, Financial and Total Leverage and the Effects on U.S. Carrier Returns, 1990-2003 by Richard D. Gritta, Brian Adams, and Bahram Adrangi Intercept Surveys: Productivity in Collecting Truck Trip Data, A Case Study of Portland, Oregon by Eric Jessup, Ken Casavant, Catherine Lawson, and Alan Kirk Identification of Factors Leading to High Severity of Crashes in Rural Areas by Sunanda Dissanayake and Indike Ratnayake Analysis of Traveler Characteristics by Mode Choice in HOT Corridors by Mark W. Burris and Carlos F. Figueroa Freight Transportation Demands on the Upper Mississippi and Illinois Rivers by Tun-Hsiang Yu, Jin Zhang, and Stephen Fuller Review and Analysis of the Effects of Major Aviation Accidents in the United States on Safety Policy, Regulation, and Technology by Alfredo Lagos, Majid Motevalli, Vahid Motevalli, and Nobuyo Sakata Book Reviews:Handbook of Transportation Science by Vincent W. Yao Mobility: America's Transportation Mess and How to Fix It by Gabriel Roth On the cover: In the past, JTRF has published papers that measure the willingness to pay of transportation users for transportation services in the United States. Phanikumar and Maitra extend this area of inquiry to the international arena with their article on willingness to pay for rural bus service attributes in India. (Photo credit: www.morguefile.com) General Editors: Michael W. Babcock, Kansas State University and Kofi Obeng, North Carolina A&T State University Book Review Editor: Jack S. Ventura, Surface Transportation Board Associate Editors: Richard Gritta, University of Portland; Robert Harrison, University of Texas; Kevin H. Horn, G.E.C. Inc.; Patrick McCarthy, Georgia Institute of Technology; Barry Prentice, University of Manitoba; and Carl Scheraga, Fairfield University. Disclaimer: The facts, opinions, and conclusions set forth in the articles contained herein are those of the authors and quotations should be so attributed. They do not necessarily represent the views and opinions of the Transportation Research Forum (TRF), nor can TRF assume any responsibility for the accuracy or validity of any of the information contained herein. Subscriptions: The Journal of the Transportation Research Forum (JTRF) is distributed to members of the Transportation Research Forum and subscribers. Currently, the JTRF is published three times per year. Annual subscriptions are available to the general public for $150 and must be purchased for a calendar year. An electronic version (PDF format) is available for $50 per Journal or single Journal articles for $10 each. Subscriptions and/or membership applications may be obtained from the following office: Transportation Research Forum
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