The City Circle is a mostly-underground railway line located in the

Sydney central business district The Sydney central business district (CBD) is the historical and main Central business district, commercial centre of Sydney. The CBD is Sydney's city centre, or Sydney City, and the two terms are used interchangeably. Colloquially, the CBD or c ...

and

Haymarket Haymarket may refer to: Places Australia * Haymarket, New South Wales, area of Sydney, Australia Germany * Heumarkt (KVB), transport interchange in Cologne on the site of the Heumarkt (literally: hay market) Russia * Sennaya Square (''Hay Squ ...

, in

New South Wales ) , nickname = , image_map = New South Wales in Australia.svg , map_caption = Location of New South Wales in AustraliaCoordinates: , subdivision_type = Country , subdivision_name = Australia , established_title = Before federation , es ...

Australia Australia, officially the Commonwealth of Australia, is a Sovereign state, sovereign country comprising the mainland of the Australia (continent), Australian continent, the island of Tasmania, and numerous List of islands of Australia, sma ...

, that forms the core of Sydney's passenger rail network. The lines are owned by the

Transport Asset Holding Entity Transport Asset Holding Entity of New South Wales (TAHE) is a state-owned corporation of the New South Wales Government in New South Wales, Australia, established under the ''Transport Administration Act 1988''. It was converted and renamed fro ...

, a

State government A state government is the government that controls a subdivision of a country in a federal form of government, which shares political power with the federal or national government. A state government may have some level of political autonomy, or ...

agency, and operated under

Transport for NSW Transport for NSW, sometimes abbreviated to TfNSW, and pronounced as Transport for New South Wales, is an agency of the New South Wales Government established on 1 November 2011, and is the leading transport and roads agency in New South Wales, ...

Sydney Trains Sydney Trains is the operator of the suburban passenger rail network serving the city of Sydney, New South Wales, Australia. The network is a hybrid urban- suburban rail system with a central underground core that covers over of track and 170 ...

brand. Despite its name, the City Circle is of a horseshoe shape, with trains operating in a U-shaped pattern. The constituent stations of the Circle are (clockwise):

Central Central is an adjective usually referring to being in the center of some place or (mathematical) object. Central may also refer to: Directions and generalised locations * Central Africa, a region in the centre of Africa continent, also known as ...

Town Hall In local government, a city hall, town hall, civic centre (in the UK or Australia), guildhall, or a municipal building (in the Philippines), is the chief administrative building of a city, town, or other municipality. It usually houses ...

, Wynyard,

Circular Quay Circular Quay is a harbour, former working port and now international passenger shipping port, public piazza and tourism precinct, heritage area, and transport node located in Sydney, New South Wales, Australia on the northern edge of the Syd ...

, St James,

Museum A museum ( ; plural museums or, rarely, musea) is a building or institution that cares for and displays a collection of artifacts and other objects of artistic, cultural, historical, or scientific importance. Many public museums make these ...

and back to Central.

History and description

The original concept for the City Railway was part of a report dated 1915 submitted to the government by chief railway engineer, John Bradfield, upon his return from overseas study, with work commencing the following year. His concepts were largely based on the

New York City Subway The New York City Subway is a rapid transit system owned by the government of New York City and leased to the New York City Transit Authority, an affiliate agency of the state-run Metropolitan Transportation Authority (MTA). Opened on October 2 ...

, which he observed during his time in

New York City New York, often called New York City or NYC, is the List of United States cities by population, most populous city in the United States. With a 2020 population of 8,804,190 distributed over , New York City is also the L ...

. Built in stages, the first City Circle stations to open were the

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Museum and St James, which both opened in 1926 as part of the initial electrification of Sydney railways. Next was the "western limb" through Town Hall and Wynyard, which opened in 1932 in conjunction with the opening of the

Sydney Harbour Bridge The Sydney Harbour Bridge is a steel through arch bridge in Sydney, spanning Port Jackson, Sydney Harbour from the Sydney central business district, central business district (CBD) to the North Shore (Sydney), North Shore. The view of the bridg ...

. This section contains four tunnels. Two connected to the Harbour Bridge, while the two City Circle tunnels terminated at Wynyard. In 1956, the dead ends at St. James and Wynyard were joined and the "missing link", Circular Quay – was opened. Central and Circular Quay stations are above-ground (Circular Quay is elevated, directly underneath the

Cahill Expressway The Cahill Expressway is an urban freeway in Sydney and was the first freeway constructed in Australia, opening to traffic in 1958. It starts from the Eastern Distributor and Cross City Tunnel in Woolloomooloo, and runs through a series of s ...

), while the remainder are underground. Several unused railway tunnels also exist. The former tram tunnels at Wynyard, and other stub tunnels at St James are well known. The City Circle is double track throughout, although it forms four tracks at Central as there are two ends of the same track. The outer track is known as the "City Outer" and is used by trains travelling clockwise around the City Circle. In the direction of travel it passes through Central platform 17, Town Hall platform 6, Wynyard platform 6, Circular Quay platform 2, St James platform 2, Museum platform 2. Trains can then either proceed to Central platform 22 or 23, depending on which line they are running on. Similarly, the inner track is known as the "City Inner" and is used by trains travelling anti-clockwise. It starts from Central platform 20 or 21, again depending on which line a train is coming from. It then passes through Museum platform 1, St James platform 1, Circular Quay platform 1, Wynyard platform 5, Town Hall platform 1 then Central platform 19.

Services and operations

The current service patterns generally consist of trains from the

Bankstown Line The Bankstown Line (numbered T3, coloured orange) is a commuter rail line operated by Sydney Trains in Sydney, New South Wales, Australia. It serves Canterbury-Bankstown and parts of the Inner West and Western Sydney. The Bankstown railway li ...

and the

Inner West & Leppington Line The Inner West & Leppington Line (numbered T2, coloured light blue) is a commuter rail service currently operated by Sydney Trains, serving the inner west and south-western regions of Sydney, Australia. Consisting of 37 stops, the service comm ...

operating via the City Circle Outer. Trains from the

Airport & South Line The Airport & South Line (numbered T8, coloured green) (''commonly called the East Hills Line)'' is a suburban commuter rail line in Sydney, Australia. It connects the Sydney central business district with the southwestern suburbs via Sydney Ai ...

generally operate via the City Circle Inner. Some Bankstown line trains also operate via the City Circle Inner on weekdays, especially during peak hours. A set of

flying junction A flying junction or flyover is a railway junction at which one or more diverging or converging tracks in a multiple-track route cross other tracks on the route by bridge to avoid conflict with other train movements. A more technical term is "gr ...

s at Central enable this pattern to be varied. Prior to the integration of the Eastern Suburbs line into the

Illawarra Line The South Coast Railway (also known as the Illawarra Railway) is a commuter and goods railway line from Sydney to Wollongong and Bomaderry in New South Wales, Australia. Beginning at the Illawarra Junction, the line services the Illawarra a ...

in 1980, Illawarra line trains also operated around the City Circle. Trains on the

Western Western may refer to: Places *Western, Nebraska, a village in the US *Western, New York, a town in the US *Western Creek, Tasmania, a locality in Australia *Western Junction, Tasmania, a locality in Australia *Western world, countries that id ...

and Northern lines usually do not proceed around the City Circle but instead, proceed across the Harbour Bridge to the North Shore line and vice versa.

Speed control and reduced overlap

''For more information about signalling, see

Australian railway signalling Australian railway signalling varies between the states of Australia, because each railway system was established under the different colonial governments with separate legislation. Just as with the notorious variation of Australian rail gauges, th ...

''
Up until the City Circle Resignalling of the 1990s, the western stations of the line were signalling such that a following train could enter the platform while the previous train was still departing. The signal granting access to the platform would show a restrictive aspect (probably calling-on - red over red over small amber - which indicates that the train can proceed but the block is not necessarily clear) and train stops spread along the platform would control the speed of the following train. This allowed these stations to deal with 42 trains per hour in either direction provided sub 40 second dwell times. The 1990s resignalling changed the older eastern stations to follow a similar operation. At some point the system was changed again to provide additional safety. Signals on the City Circle can no longer display a calling-on aspect, but can display low-speed (red over red over small green - which means that the block is clear but to proceed slowly, not exceeding ). Consequently, trains can no longer enter the platform while a previous train is departing and the system cannot handle more than 20 trains per hour. Sydney_Trains_Trip_Dropping_Example

Stations

The line has six stations.

Gallery

File:Central railway station Sydney.jpg, Platform 18 and 19 at Central station File:TownHallStation2.JPG, Town Hall – platform 4 (Illawarra line platform) File:Wynyard railway station entrance, Wynyard Walk, April 2017.jpg, Wynyard station entrance File:Circular Quay railway station Sydney Entry Gate 201708.jpg, Circular Quay station ticket gates File:St James Station Sydney.jpg, St James platform 2 File:Museum Station Sydney 1.jpg, Museum platform 2 File:Open cut underground railway now completed, Museum Station, Sydney, New South Wales, ca. 1925 (9781167304).jpg, Museum Station was built using the

cut-and-cover A tunnel is an underground passageway, dug through surrounding soil, earth or rock, and enclosed except for the entrance and exit, commonly at each end. A pipeline is not a tunnel, though some recent tunnels have used immersed tube constr ...

technique File:Circular Quay Platform 2, Looking Eastbound.JPG, Circular Quay station

References

External links

Transport for NSW trains

NSW rail
City Circle {{Sydney landmarks