1、2011 6th EditionSecond Printing 2011 by the American Association of State Highway and Transportation Officials. All rights reserved. Duplication is a violation of applicable law.American Association of State Highway and Transportation Of cials 444 North Capitol Street, NW, Suite 249 Washington, DC 2
2、0001 202-624-5800 phone/202-624-5806 fax www.transportation.org 2011 by the American Association of State Highway and Transportation Of cials. All rights reserved. Duplication is a violation of applicable law. Publication Code: GDHS-6 ISBN: 978-1-56051-508-1 2011 by the American Association of State
3、 Highway and Transportation Officials. All rights reserved. Duplication is a violation of applicable law.iii EXECUTIVE COMMITTEE 2010 2011 Of cers President: Susan Martinovich, P.E., NEV ADA Vice President: Kirk Steudle, P.E., MICHIGAN Secretary/Treasurer: Carlos Braceras, UTAH Immediate Past Presid
4、ent: Vacant Regional Representatives REGION I George N. Campbell, Jr., NEW HAMPSHIRE Beverley K. Swaim-Staley, MARYLAND REGION II Mike Hancock, KENTUCKY Robert St. Onge, SOUTH CAROLINA REGION III Thomas K. Sorel, MINNESOTA Vacant REGION IV Amadeo Saenz, Jr., TEXAS Francis G. Ziegler P.E., NORTH DAKOTA Non-Voting Members Executive Director: John Horsley, AASHTO 2011 by the American Association of State Highway and Transportation Officials. All rights reserved. Duplication is a violation of applicable law.
