They make up about 45 % of the traffic , which is more than any other country . But they carry on like they ' re over 90 %.<| sep |> It really is an out of place line these days , although there did use to be a few smaller lines like that . For example the Ropes Creek Line , the Royal National Park line still in use as a museum line for the tramway museum , and going back even further the original Northwest line Rogans Hill Line , for which little remains except a plaque at the old Baulkham Hills station site . For the Carlingford Line , conversion to light rail would be a good outcome , especially if they can work out a way to connect the terminus to Granville instead of the current location at Clyde . I don ' t know if it makes sense to keep a heavy rail platform at Rosehill Racecourse or not .