Which company operates the railway line that bounds Peterhead, South Australia on the west side?
Outer Harbor railway line The Outer Harbor railway line is a suburban branch line in Adelaide, South Australia. It runs from Adelaide station through the north western suburbs to Port Adelaide and Outer Harbor. It is 21.9 kilometres in length, and shares part of its run with the Grange line. It is operated by Adelaide Metro.
Macarthur railway station Macarthur railway station is located on the Main South line, serving the Sydney suburb of Campbeltown. It is served by Sydney Trains T2 Airport line and NSW TrainLink Southern Highlands Line services. It is the southern extremity of the electrified Sydney Trains network.