The location near the intersection of two converging tracks beyond which adequate clearance does not exist for concurrent passage of on-rail equipment; point on a track where equipment may interfere with movements on a roadway or adjacent track.
Urban Transportation Modeling System.
English-like, user friendly, procedural computer languages used to program and/or read and process computer files.
An electrical conductor that provides ground return or negative return for systems in which the running rails are not used for that purpose. (TRB)