Parsons Green is an intermediate terminating point for both C and D stock trains. Below are the seven sidings explained:
Two sidings north of the station:
One of these is only accessible from the eastbound running line, and can accommodate two D Stock trains or two C Stock trains.
The second is only accessible from the westbound running line.
Five sidings south of the station:
Two sidings are southwest of the station, which are always used when there is a suspension between Parsons Green and Wimbledon, or during moments of service disruption. Accessible from the westbound platform.
Two sidings are southeast of the station, which are also accessible from the westbound platform. Trains are only put into these sidings during weekends of engineering work, and are not preferred to be used during service disruptions. The reason for this is that when trains are stabled in these sidings, they cannot go back into passenger service from Parsons Green. Due to the track layout, when trains from these sidings go back into the eastbound platform, the first carriage will pass the headwall of the eastbound platform, meaning only 5 of the 6 carriages can fit into the platform.
There is a siding adjacent to the westbound platform, which can only fit a C Stock train. The siding is only accessible from the easternmost of the above sidings.
North of the station, the line would of branch off into a new tunneled section that could carry it into Victoria station, via a new station on the Kings Road, Chelsea station. Crossrail 2 will be built to National Rail standards and will go to Wimbledon via Clapham Junction instead. The route was safeguarded in 1991 and again in 2007.