Research problem statements design and construction of transportation facilities. - National Research Council (U.S.). Transportation Research Board (Washington, D.C. Transportation Research Board, National Academy of Sciences, 1976)
Cover title.
This circular supplements Circular 160 dated November 1974 in which 81 priority research needs were identified by 17 of the group's committees.
September 1976
Keywords: Highway engineering -- Research; Traffic engineering -- Research; Railroad engineering -- Research