Kolkata Circular Railway

The line begins and terminates at Dum Dum Junction, with a total of 19 stations spread over the route's 35 kilometers length. Services on the line are operated as an extension of the Kolkata Suburban Railway, partially sharing tracks with the Sealdah South lines, terminating at Sealdah railway station (which is bypassed by the Circular Railway). There are no services which operate throughout the loop as a whole; instead, services are operated from Dum Dum Junction to Majerhat (via Burrabazar) and Majerhat to Dum Dum Junction (via Ballygunge Junction). The line operates a part of longer suburban services from Budge Budge, Canning, Barrackpore, Hasnabad, Kalyani, Naihati etc.

The Circular Railway offers direct interchange points with the Kolkata Metro at Dum Dum Junction. The loop line serves Kolkata railway station, one of the major intercity stations in Kolkata, as well as a number of prominent city landmarks including Prinsep Ghat and Eden Gardens. In addition, a 3.7 km (2.3 mi) long line connecting Dum Dum Cantonment to the Netaji Subhash Chandra Bose International Airport became the first such suburban railway line in India to serve an airport and allowed extended Circular Railway operations from Dum Dum Junction and beyond. However, the poorly-patronized branch line between Dum Dum Cantonment railway station and Biman Bandar railway station is replaced by Line 4 (under construction) of the Kolkata Metro, which follows the same route.[1]

A photo of the Circular Railway track taken in Kolkata

With the population of the Kolkata metropolis continuing to grow, and road transport being unable to cope with demand due to bottlenecks on the roads, it was felt necessary to introduce an additional method of transportation which would ease the congestion problem particularly at peak hours. Of the various modes considered, including tramcars and buses, the railway was found to be most suitable. Unlike other metropolitan cities, Kolkata does not have a rail route running through the heart of the city, nor through the central district area where more commuters will be seeking their transport.

Previously a railway line existed between Dum Dum railway station to Ultadanga for the transport of wagons to Chitpur Goods Yard. For a considerable time, lines ran between B.B.D. Bagh and Majerhat for the transport of goods from the port area to the godowns (warehouses) of the Calcutta port along the Hooghly River. These were built during the early East Indian Railway Company (EIR) period when the river Hooghly was navigable to this area. Gradually with the silting of Hooghly, and its inaccessibility to bigger ships, these lines ceased to be used. With these existing lines being rehabilitated and small stretches of new track being laid in a few locations, a connection could be established between Dum Dum Junction and Prinsep Ghat along the bank of the Hooghly.

The original line was a single-line track with loading and unloading sidings and wharfs. A few platforms were built and simultaneous reception facilities were constructed at some stations. The line was commissioned from Dum Dum railway station to Prinsep Ghat on 16 August 1984. In fact the lines from the port of Calcutta already existed for an interchange yard for Eastern Railways, and these lines were modified/extended/realigned for the Circular Railway. Previously the trains were hauled by diesel shunters. The electrification works have been completed and four Electrical Multiple Unit (EMU) trains originally destined for Sealdah during office hours have been diverted to the central business district of Kolkata directly, avoiding Sealdah station. The line has been an overwhelming success with commuters and the earnings have quadrupled with the introduction of EMUs. Once connected to Majerhat a train can easily ply up to Dum Dum to complete the circle. This has been a boon to office-goers. The Circular Railway is directly managed by the Eastern Railway. The Circular Railway is a part of the Kolkata Suburban Railway along with the Kolkata Metro to provide connectivity throughout the city. The line is a single-lined track from Tala station to Princep Ghat station, but in the platform area it becomes double-lined for crossing. From Princep Ghat the line becomes single-tracked until it reaches Majerhat.

List of Kolkata Circular Railway stations in anti-circular way:

#	Station Name			Connections	Picture	Notes
	English	Bengali	Code
(a)	Dum Dum Cantonment	দম দম ক্যানটনমেন্ট	DDC	Sealdah Eastern line
				Dum Dum Cantt.
1	Dum Dum Jn.	দম দম জংশন	DDJ	Sealdah Eastern line
				Sealdah Chord link line
				Dum Dum
2	Patipukur	পাতিপুকুর	PTKR	–
3	Kolkata	কলকাতা	KOAA	–		Major railway station of Eastern Railway
4	Tala	টালা	TALA	–
5	Bagbazar	বাগবাজার	BBR	Bagbazar Launch Ghat
6	Sovabazar Ahiritola	শোভাবাজার আহিরীটোলা	SOLA	Sovabazar Launch Ghat
				Ahiritola Ghat
7	Burrabazar	বড়বাজার	BZB	Jagannath Ghat
8	B.B.D Bag	বি.বা.দি. বাগ	BBDB	Fairlie Place Ghat
9	Eden Gardens	ইডেন গার্ডেন্স	EDG	Outram Ghat
10	Prinsep Ghat	প্রিন্সেপ ঘাট	PPGT	Prinsep Ghat
11	Khiddirpur	খিদিরপুর	KIRP	Khidirpur
12	Remount Road	রিমাউন্ট রোড	RMTR	–
13	Majerhat	মাঝেরহাট	MJT	Sealdah South line
				Majerhat
14	New Alipore	নিউ আলিপুর	NACC	–
15	Tollygunge	টালিগঞ্জ	TLG	Rabindra Sarobar
16	Lake Gardens	লেক গার্ডেন্স	LKF	–
17	Ballygunge	বালিগঞ্জ	BLN	Sealdah South line
18	Park Circus	পার্ক সার্কাস	PQS	Sealdah South line
19	Sir Gurudas Banerjee Halt	স্যার গুরুদাস ব্যানার্জি হল্ট	SGBA	Phoolbagan
20	Bidhannagar Road	বিধাননগর রোড	BNXR	Bidhannagar

Kolkata's Circular Railway was extended from Dum Dum Cantonment to Biman Bandar/Netaji Subhash Chandra Bose International Airport. The 3.8 km (2.4 mi) extension from Dum Dum Cantonment station included two elevated stations Jessore Road and Biman Bandar. It ran at grade to UK Dutta Road and then on an elevated structure to the Airport passing through Jessop, Jessore Road, VIP Road and the domestic terminal road. This project was undertaken by the Kolkata Metro.

The Jessore Road station has been closed since 7 January 2015. The Biman Bandar station has been closed since 30 September 2016. Currently this section is being converted into metro under Kolkata Metro Line 4.[1]

There is also a plan to build two more stations between Park Circus and Sir Gurudas Banerjee Halt named Tangra and Beliaghata Main Road respectively.

• Transport in Kolkata
• Kolkata Suburban Railway