Acknowledgments

U.S. Department of Transportation

Norman Y. Mineta
Secretary

Bureau of Transportation Statistics

Rick Kowalewski
Deputy Director

William J. Chang
Associate Director for Information Systems

Mary J. Hutzler
Associate Director for Statistical Programs

Produced under the direction of:

Wendell Fletcher
Assistant Director for Transportation Analysis

Project Manager

Kay Drucker

Contributors

Steven Beningo
David Chesser
Martha Courtney
Marsha Fenn
Paulette Grady
Xiaoli Han
Janice Lalangan
Getachew Mekonnen
Marissa Mercadante
Long Nguyen
Lorisa Smith
Jie Zhang