TRID (Transport Research International Documentation)
TRID includes over 900,000 records covering transportation research from ITRD and TRIS. It includes TRB publications going back to 1923, including Highway Research Board, SHRP, and Marine Board publications. Also indexed are Environmental Impact Statements, theses, reports, and research in progress. TRID is the world’s largest and most comprehensive bibliographic resource on transportation research information, covering all modes and disciplines of transportation.