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... 500 Fifth Street, NW Phone: 202 334 2934 Washington, DC 20001 www.TRB.org April 30, 2013 The Honorable Ray LaHood Secretary U.S. Department of Transportation 1200 New Jersey Avenue, SE Washington, DC 20590 Dear Secretary LaHood: Section 508 of the 2012 surface transportation authorization statute, Moving Ahead for Progress in the 21st Century (MAP-21)

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