The STB is a three-member board created as part of the Department of Transportation to take over when the Interstate Commerce Commission was dissolved on January 1, 1996. The STB's job is to regulate railroads, pipeline carriers, inter-city bus carriers, and several other kinds of "carriers." STB decisions, notices, filings and publications are posted on the STB's Web site (www.stb.dot.gov).
Lexis has a database of STB decisions issued from 1996 to the present (TRANSSTB). Westlaw has ICC and STB from 1976 to the present, including non-precedential, unpublished "no print" decisions starting in 1986 (FTRAN-STB). Old motor carrier orders, agreements, decisions and opinions from March 1974 through May 1998 are available on Lexis (TRANS;MCC).
For questions, STB main phone number is 202-245-0245, or call the STB library at 202-245-0406.