Acknowledgments

U.S. Department of Transportation

Ray H. LaHood
Secretary

Research and Innovative Technology Administration

Peter H. Appel
Administrator

Bureau of Transportation Statistics

Steven D. Dillingham, Ph.D.
Director

Steven K. Smith, Ph.D.
Deputy Director

Produced under the direction of:

Deborah D. Johnson
Assistant Director, Office of Transportation Analysis

Project Manager

Long X. Nguyen

Major Contributors

Felix Ammah-Tagoe, Ph.D.
Shana Johnson
Stephen Pelletier
E-Ternational

Other Contributors

Steve Anderson
Steve Beningo
Matt Chambers
Jacob Hommeland
Sean Jahanmir
Steve Lewis

RITA Editor

William H. Moore

RITA Visual Information Specialist

Alpha Wingfield