The Central line in Mumbai consists of three major corridors, which bifurcate as they run into suburban satellite towns.
Two corridors (one local and other through) on Central Railway run from CSMT to Kalyan Junction (55 km),[3] from where it bifurcates into two lines – one running up to Kasara (67 km) in the north-east and the other running up to Khopoli (61 km) in the south-east. These two corridors constitute the 'Main' Line. The Central main line shares one station with the Western line at Dadar. They consist of a fleet of DC as well as dual-powered EMUs.
The major car sheds on this line are at Kurla and Kalva. There are fast and slow locals here for suburban service. Slow locals halt at every station, while fast locals halts vary between Byculla, Dadar, Kurla, Ghatkopar, Vikhroli, Bhandup, Mulund, Thane, Diva, Dombivli and Kalyan Junction. All services plying beyond this junction run slow. Trains usually start from and terminate at important stations.
Routes
The Central line consists of the following routes:
The Vasai Road–Bhiwandi Road-Diva–Panvel–Roha line connects the Western line station of Vasai Road with the Harbour line station of Panvel. It intersects the main line of the Central line at Diva. MEMUs operate between Dahanu Road and Roha via a branch line from Diva.
The Nerul/CBD Belapur–Uran rail track of 27 km is currently under construction.[5] The line is being constructed by CIDCO at a cost of ₹14.12 billion.[6] It is expected to be operational by 2015.[7]
Railway electrification in India began with the first electric train, between Bombay Victoria Terminus and Kurla by the Great Indian Peninsula Railway (GIPR) on 3 February 1925, on 1.5 kV DC. The Kalyan–Pune section was electrified with 1.5 kV DC overhead system in 1930.[9]
The previously used 1.5 kV DC was converted to 25 kV AC on 5 May 2013 from Kalyan to Khopoli and Kalyan to Kasara.[10] Conversion from 1.5 kV DC to 25 kV AC on the Lokmanya Tilak Terminus-Thane-Kalyan section was completed on 12 January 2014.[11] The CSMT to LTT section was converted from 1.5 kV DC to 25 kV AC on 8 June 2015.[12][13]
Services
Since November 2011, all services on the Central line have been running on 12 cars. In preparation for introducing 15 car services, CR extended platforms at Byculla, Kurla, Ghatkopar, Bhandup, Mulund and Dombivli stations, from the current 270 metres to 330 metres,[14] in order to accommodate 15 coach trains. The total cost of the work was estimated at ₹37.5 million (US$470,000).[15] The first 15-car service, on the Central line, departed from Chhatrapati Shivaji Terminus to Kalyan at 7:33 pm on 16 October 2012.[16]
As of March 2014, 75 rakes operate 825 services on the Central line daily, of which 809 are 12-car and 16 are 15-car services.[12]
