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Acknowledgment
U.S. Department of Transportation
Mary E. Peters
Secretary
Research and Innovative Technology Administration
John A. Bobo, Jr.
Acting Administrator
Bureau of Transportation Statistics
Steven D. Dillingham
Associate Administrator and Director
Produced under the direction of:
Wendell Fletcher
Assistant Director for Transportation Analysis
Project Manager
Deborah Johnson
Major Contributor
Felix Ammah-Tagoe
Editor
William H. Moore
Cover Design & Report Layout
Alpha Glass Wingfield
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