Southern Highlands line

The Southern Highlands Line (SHL) is a service operated by NSW TrainLink, as part of its intercity network. Its main service areas are the Southern Highlands Region (Wingecarribee Shire), the Southern Tablelands Region and the Wollondilly section of the Macarthur Region of New South Wales. It also includes the main focal points of Picton, Mittagong, Bowral, Moss Vale and Goulburn.

Route
Peak hour services from Sydney Central start at intercity platforms 1-12. They then proceed out of Sydney Yard and into the Illawara Dive, emerging onto the Illawara Line. They then cross at Sydenham onto the the Illawara Local tracks, before taking the turnout at Wolli Creek onto the East Hills (Main) line. At Glenfield, they merge onto the Main South line and remain on it for the rest of the trip.

Terminating services at Campbelltown start from the bay platform (platform 4). The terminating road then merges onto the Main South line, the same track trains from Sydney are using. All further stations on the line are on the Main South line.

Service
The line is exclusively serviced by diesel Endeavour trains, most being two cars long although some four-car services operate when in direct service to Central and or Goulburn. It is coloured green on a grey background on maps and other promotional material.

Services first began to Goulburn on 19 May 1869.

Only a subset of the stations (Campbelltown-Moss Vale) on the Southern Highlands Line are regularly served. During the offpeak, there are hourly two-car services between Campbelltown and Moss Vale. The frequency decreases to two-hourly on weekends. Some peak hour services are extended north to Sydney Central and/or extended south to Goulburn. There are also limited shuttle trains between Bundanoon and Moss Vale on weekends.

Future
There are some discussions to extend the Southern Highlands line to Canberra. It would allow an express service to and from Central every 3–4 hours with a probable stopping pattern of: Canberra, all to Goulburn then Bundanoon, Moss Vale, Bowral, Mittagong, Campbelltown and Central and vice versa. In doing this, this will allow Goulburn and Southern Highland passengers a quicker and direct trip to Central, as currently most services require a change over at either Macarthur or Campbelltown.