List of main line synonyms and main line related words.
L, branch, cable railway, cog railway, el, electric railway, elevated, elevated railway, embankment, feeder, feeder line, gravity-operated railway, horse railway, junction, light railroad, line, metro, monorail, rack railway, rack-and-pinion railway, rail, rail line, railroad, railway, roadbed, roadway, sidetrack, siding, street railway, streetcar line, subway, switchback, terminal, terminus, track, tram, tramline, trestle, trolley line, trunk, trunk line, tube, turnout, underground