Acknowledgments
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
Michael Sprung
	Director, Office of Transportation Analysis
Matthew Chambers
	Project Manager
Major Contributors
	Douglas Frechtling
	John Fuller
	David Greene
	Robert Knisely
	Alan Pisarski
	Rolf Schmitt
Additional content and support provided by
	Theresa Firestine
	Justyna Goworowska
	Mindy Liu
	Annette Simpson
	David Smallen
	Sonya Smith
Editor
	William Moore
Visual Information Specialist
	Alpha Wingfield