Railroad safety (communications systems for trains) Hearings before a subcommittee of the Committee on Interstate and Foreign Commerce, United States Senate, Eighty-first Congress, first session, on S. 238, a bill to amend section 25 of the Interstate commerce act to require certain common carriers by railroad to install and maintain communications systems and to establish and observe operating rules, regulations, and practices to promote safety of employees and travelers on railroads, and for other purposes.