Acknowledgements

U.S. Department of Transportation

Norman Y. Mineta
Secretary

Michael P. Jackson
Deputy Secretary

Bureau of Transportation Statistics

Rick Kowalewski
Acting Director

William J. Chang
Associate Director for Information Systems

John V. Wells
Chief Economist

Our mission: To lead in developing transportation data and information of high quality and to advance their effective use in both public and private transportation decisionmaking.

Our vision for the future: Data and information of high quality supporting every significant transportation policy decision, thus advancing the quality of life and the economic well-being of all Americans.

The Journal of Transportation and Statistics releases three numbered issues a year and is published by the
Bureau of Transportation Statistics
U.S. Department of Transportation
Room 7412
400 7th Street SW
Washington, DC 20590
USA
journal@bts.gov

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Cover and text design Susan JZ Hoffmeyer
Cover photo © Media Bakery/Eyewire

The Secretary of Transportation has determined that the publication of this periodical is necessary in the transaction of the public business required by law of this Department.