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In March 1997, the Transportation Research Board (TRB) and the Bureau of Transportation Statistics (BTS) sponsored a conference on information needs to support state and local decision making into the 21st century. That conference addressed the matter of data requirements generally, and recognized the need for future specialty conferences and workshops to address data requirements for specific aspects of transportation decision making. The conference described in these proceedings, "Information Requirements for Transportation Economic Analysis," was one of several activities growing out of the 1997 event. This conference was sponsored by TRB and BTS in cooperation with the American Association of State Highway and Transportation Officials and the Association of Metropolitan Planning Organizations. This report was prepared by Miriam Roskin, Roskin Consulting, on behalf of the Conference Steering Committee, and was reviewed and approved by that committee. The report was then reviewed by individuals chosen for their diverse perspectives and technical expertise, in accordance with procedures approved by the National Research Council's Report Review Committee. The purpose of this independent review was to provide candid and critical comments to identify areas in which the report could be improved and to ensure that it has met institutional standards for objectivity, evidence, and responsiveness to its charge.