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.
Roseworthy-Peterborough railway line The Roseworthy-Peterborough railway line was a railway line on the South Australian Railways network. It extended from a junction at Roseworthy on the Morgan railway line through Hamley Bridge, Riverton, initially to Tarlee, then extended in stages to Peterborough.