straight-line operation
61Østfold Line — Vestby Station Overview Type Railway System Norwegian railwa …
62Minobu Line — Overview Type Passenger/Freight Termini Fuji Kōfu …
63Ofoten Line — Malmtrafik train hauled by twin Iore locomotives Overview Type Railway System …
64Orange Line (Dallas Area Rapid Transit) — Orange Line Overview System light rail Operation …
65Mattstetten–Rothrist new line — Intercity train on the Mattstetten–Rothrist line Legend …
66Østensjø Line — MX3000 train near Ulsrud Overview Type Rapid transit System …
67Old Main Line Subdivision — Ellicott City Station, built 1830, is the oldest surviving passenger station in the United States. Photo taken in 1970, looking south towards Baltimore …
68Orange Line (Washington Metro) —      Orange Line …
69Atlantic Coast Line, Cornwall — This article is about the Atlantic Coast Line in Cornwall, UK. For the Atlantic Coast Line Railroad, USA, see Atlantic Coast Line Railroad. Atlantic Coast Line The line at St Blazey Bridge alongside the remains of the Par Canal Overvie …
70North East MRT Line — North East Line redirects here. For the railway line in Australia, see North East railway line.      North East MRT Line 东北地铁线 வடக்கு கிழக்கு எம்ஆர்டி வழி …