TRIS Online is a web version of the bibliographic database Transportation Research Information Services (TRIS), created in order to enhance research, safety, and operations in all fields of transportation.
TRIS Online holds over 400,000 bibliographic records covering journal articles, technical reports, books and other media. It gives links to a selection of full text documents or sources of full text documents.
This is a good place to look for transportation research of interest to mechanical, industrial and civil engineers.