"Sponsoring/monitoring agency report number: DOT-FHWA-JPO-97-008"--Report documentation page."Performing organization report number: DOT-VNTSC-FHWA-96-7"--Report documentation page."December 1996.""Author(s): Anne D. Aylward"--Report documentation page.Cover title.Includes bibliographical references (p. 36-38).Final report.Prepared by U.S. Dept. of Transportation, Research and Special Programs Administration, Volpe National Transportation Systems Center for the ITS Joint Program Office under contract no.Mode of access: Internet