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ii Transportation Research Board Miscellaneous Report ISBN 0-309-09450-X Transportation Research Board publications are available by ordering individual publications directly from the TRB Business Office, through the Internet at www.TRB.org/trb/bookstore, or by annual subscription through organizational or individual affiliation with TRB. Affiliates and library subscribers are eligible for substantial discounts. For further information, contact the Transportation Research Board Business Office, 500 Fifth Street, NW, Washington, DC 20001 (telephone 202-334-3213; fax 202-334-2519; or email TRBsales@nas.edu). Printed in the United States of America NOTICE: The views expressed in the presentations and papers contained in this report are those of the authors and do not necessarily reflect the views of the conference planning group, the Transportation Research Board, the National Research Council, or the sponsors of the workshop. The workshop was sponsored by the California Department of Transportation, the Federal Highway Administration, the National Asphalt Pavement Association, the California Asphalt Pavement Alliance, and the Transportation Research Board.
Problem identification -- distinguishing between materials-induced and construction-related factors,