Acknowledgments

U.S. Department of Transportation

Mary Peters
Secretary

Vice Admiral
Thomas J. Barrett
Deputy Secretary

Research and Innovative Technology Administration

Paul Brubaker
Administrator

Cheryl McQueary
Deputy Administrator

Bureau of Transportation Statistics

Steven D. Dillingham, Ph.D.
Director

Steven K. Smith. Ph.D.
Deputy Director

Wendell Fletcher
Assistant Director for Statistical Programs

Deborah Johnson
Assistant Director for Transportation Analysis

Project Manager

Long X. Nguyen

Data Collection and Production—MacroSys

David Chesser
Chester Ford
Getachew Mekonnen
Matthew Schultz
Charles Tennyson
Jie Zhang

Contributors

Steven Anderson
Steve Beningo
Ron Duych
William Moore

Layout

Alpha Glass Wingfield

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               Research and Innovative Technology Administration
               Bureau of Transportation Statistics
               U.S. Department of Transportation
               ATTN: Product Orders
               1200 New Jersey Avenue SE, Room E36-109
               Washington, DC 20590

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