L WATS WATS line branch cable cable railway co-ax coaxial cable cog railway concentric cable el electric railway elevated elevated railway embankment feeder feeder line gravity-operated railway horse railway junction light railroad line main line metro monorail party line private line rack railway rack-and-pinion railway rail rail line railroad railway roadbed roadway sidetrack siding street railway streetcar line subway switchback telegraph cable telegraph line telephone line terminal terminus track tram tramline trestle trolley line trunk tube turnout underground wire line