The Northern Line is part of the metropolitan rail network in Sydney known as CityRail. It serves the northern suburbs of Sydney and the Lower North Shore, along with parts of the Inner West and the Hills District. The line utilises the Epping to Chatswood Line and parts of the Main Northern Line, North Shore Line and Main Suburban Line. It is denoted as red on CityRail network maps and other publicity. Cityrail initially promised the Northern Line would be fully air-conditioned in the October 2009 timetable changes because the older non-air-conditioned trains were too noisy to run on the Epping-Chatswood rail link. However, Railcorp took remedial soundproofing works on the underground rail link in 2010 and this has meant that many services on the Northern Line are in fact non-air-conditioned, with the oldest non-air-conditioned CityRail L, R & S sets now allowed on the Epping-Chatswood rail link.
The line begins at Hornsby - a junction station with the North Shore Line. The line heads south to Epping using the Main Northern Line. At Epping the line heads underground to the Macquarie employment centre and Chatswood via the Epping to Chatswood Line. The line surfaces at Chatswood and joins the North Shore Line for the run south towards the City. Trains pass through North Sydney station before heading across the Harbour Bridge and through the underground stations of Wynyard and Town Hall, and the surface stations of Central and Redfern. Services then... Read More