Description
Item Description:"Transportation Research Board, National Research Council."
"Research sponsored by the American Association of State Highway and Transportation Officials in cooperation with the Federal Highway Administration."
"Project 20-5 FY 1988 (Topic 21-13)"--Title page verso.
Physical Description:45 pages : illustrations ; 28 cm.
Bibliography:Includes bibliographical references (pages 41-42).
ISBN:0309053145
ISSN:0547-5570 ;