Acknowledgements
U.S. Department of Transportation
Anthony Foxx
Secretary of Transportation
Victor Mendez
Deputy Secretary of Transportation
Gregory Winfree
Assistant Secretary for Research and Technology
Bureau of Transportation Statistics
Patricia Hu
Director
Rolf Schmitt
Deputy Director
Produced under the direction of:
Karen E. White
Director, Office of Statistical and Economic Analysis
Major Contributors
Stephen Brumbaugh
Kenneth Notis
Other Contributors
Edward Ross Crichton
Bernetta Crutcher
Theresa Firestine
David Smallen
Sonya Smith
Connie Tang
Editor
William H. Moore
Visual Information Specialist
Alpha Wingfield