Chennai Mass Rapid Transit System

The well-established Chennai Suburban Railway network, which dates back to 1931, began services on the metre gauge line from Beach to Tambaram. Two more suburban networks, Chennai Central–Arakkonam and Chennai Central–Gummidipoondi began operations in 1985 from the then newly built Moore market complex annex of the Chennai Central railway station.Earlier services for both these sections were operated from Central station.In 1965, the Planning Commission set up a study team on metropolitan transport to assess the adequacy and limitation of existing transport facilities in the cities of Calcutta, Bombay, Madras and Delhi to determine the feasibility of different modes of transport and recommend phased programmes for development of transport facilities.[9] In a means to supplement the existing suburban rail network in Chennai, a number of surveys were conducted in the 1960s including the surveys by the Madras Area Transportation Study Unit (MATSU), which was set up by the Planning Commission during 1968–1970 and the Metropolitan Transport Project (MTP), which was established by Indian Railways in July 1971.[10] The surveys and studies identified eight important transport corridors, including the 39-km north–southeastern rail corridor along the Buckingham Canal.[11] These were soon followed by a feasibility study conducted by RITES, an engineering and infrastructure enterprise of the Government of India, on behalf of the state government. The study results were submitted in 1975, suggesting a rail-based mass transit system between Kasturba Nagar and Manali Road.

The system was envisaged as a 59.38 km (36.90 mi) loop line passing through Chennai Beach and Tiruvottiyur.[12] In the 1980s, the government began planning for a new railway line inside the city. The suburban lines offered no connectivity to Central and South Madras (as the city was known then). Planning began in 1984.[13]

Since the rail line passes through congested parts of the city, an elevated rail system with an alignment along the Buckingham Canal was selected, as it would avoid land-acquisition problems.[4] The MTP intended to implement the project in four phases:

• First phase: From Beach to Tirumailai (Mylapore)
• Second phase: From Tirumailai to St. Thomas Mount
• Third phase: From St. Thomas Mount to Villivakkam
• Fourth phase: From Villivakkam to Ennore
• Fifth phase from Perungudi MRTS station to Kalpakkam via Mamallapuram

However, the current line is slated to not extend past St. Thomas Mount, as the Chennai Metro project is slated to use a similar alignment.[12][14][15]

Although the present system was planned in the 1970s and the 1980s, the project was taken up for implementation by the Government of India, Ministry of Railways in 1983–84 at an estimated cost of ₹ 534.6 million,[15] it took nearly a decade for the first phase to construct and begin operation. Construction began in earnest in 1991. After many delays, the first phase was operational from Beach up to Chepauk in 1995 as the first elevated railway line in India,[16] and it was extended to Thirumayilai station in Mylapore in 1997.[10][17] When the first phase between Chennai Beach and Thirumyilai opened in 1997, the project cost ₹ 2,690 million, compared to the initial estimate of ₹ 550 million in 1984.[11] The patronage of the first phase turned out to be way lesser than the over-reckoned value of 603,000 passengers per day.[18] In 1998, the Railway Board accorded sanction of executing Phase II of the project from Thirumayilai to Velachery.

The second phase of the project was taken up on the basis of the study conducted by RITES during 1987 and 1994 and taking into account population growth and the capacity of public transport system.[9] The MRTS services were extended from Thirumaylai to Thiruvanmiyur on 27 June 2004, as part of its second phase.[19][20][21][22][23][24] On 19 November 2007, the network was further extended from Thiruvanmiyur to Velachery[25] at a cost of ₹ 7,690 million.[22][25][26][27] The extended second phase of the project, connecting Velachery with St. Thomas Mount, is currently underway. However, changes to its original alignment have drawn fierce opposition from residents, some of whom have been asked to relocate.[28][29][30][31][32]

The progress of different phases of the line is summarised in the following table:

Phase I from Beach to Tirumailai was fully funded by the Southern Railways, and the state government gave the required land free of cost. Phase II between Tirumailai and Velachery was implemented with the state government bearing two-thirds of the project cost. For the extension of Phase II to St. Thomas Mount, the ratio remains the same as Phase II.[35]

• 1965 the Planning Commission was set up
• 1975 RITES completed its feasibility study and submitted it to railways department
• 1987 feasibility study for phase 2 started
• 1991 Phase 1 of chennai MRTS construction begins
• 1994 phase 2 feasibility study completed
• 1995 phase 1 of chennai MRTS project completed partially and opened for traffic till chepauk. First elevated railway line in the country after its inauguration. It will be the second mass rapid transit system in India, Kolkata metro stands first.
• 1997 MRTS phase 1 completed fully till Thirumayilai and opened for traffic.
• 1998 The Railway Board accorded sanction of executing Phase II of the project from Thirumayilai to Velachery.
• 27 June 2004 The MRTS services were extended from Thirumaylai to Thiruvanmiyur on as part of its second phase
• 19 November 2007 the network was further extended from Thiruvanmiyur to Velachery
• July 2011 Construction of the stations begins.
• July 2012 According to the Railway Budget 2012, the section would be commissioned by December 2013.[36]
• October 2012 Land acquisition by CMDA has resumed after the Madras High court vacated a stay and construction work is expected to resume once the acquired land is transferred to the Railways. Land acquisition on the 5-km stretch resumed to be completed in 45 days.[6][37]
• April 2013 expected to be completed by February 2013 but legal wrangles continue to obstruct the development[38]
• July 2013 The extension of the network has hit a cul de sac near Thillai Ganga Nagar due to difficulty in procuring the land from the locals.[39][40]
• May 2014 3.7 km of the 5-km stretch of the MRTS line completed. Work is expected to resume, in a month, after the beneficiaries who had approached the High Court against the acquisition of 500 metres of land are expected to be compensated under the Indian government's new Land Acquisition Act, that came into effect on 2014, replacing a 119-year-old obsolete legislation.[41]
• October 2014 Few of the residents again approached court demanding higher compensation, based on the Land Acquisition Act 2013 - that came into force from 1 January 2014.[42]
• July 2015 As many as 18 cases filed in Madras High Court to fix the compensation under the new Land Acquisition Act - and the project was not expected to be complete before December, 2016.[43]
• 6 August 2015 the High Court directed the authorities to follow the new law enacted in 2013 that gave better compensation to land owners and to complete the exercise as expeditiously as possible and not later than three months.[44]
• November 2015 Revenue Officials state that land acquisition process had been put on hold as they were engaged in flood-relief work.[45]
• March 2016 Southern Railway General Manager states that MRTS final phase will take at least 18 more months from the date of receiving land (for the last 500 meters) from State Government – which is yet to start the process of acquiring land as per new rates.[46]
• November 2018 discussion between residents and Chennai Metropolitan Development Authority fails again[47][48]
• January 2019 Court dismisses a batch of 40 petitions challenging land acquisition for the project[49]
• July 2019 In nine months, MRTS extends the service up to Adambakkam[50]
• August 2019 Railway Minister Piyush Goyal assures MRTS completion in 18 months[51]
• January 2020 Land acquisition problems still continued by Land owners even after the court's order[52]
• 10 September 2020 Railway officials plans to operate shuttle services in-between the completed stretch of Adambakkam to Velacherry MRTS.[53]
• 21 September 2020 CMDA Officials Filed a case regarding the Land acquisition once again[54]
• 31 December 2020 Finally the Buildings present in the last 500 m stretch gets demolished and the land is being ready to handed over to Indian railways for Construction of the last 500 m stretch, and announced soon tender will be floated.[55]
• 13 January 2021 Commissioner of Rail Safety (CRS) Plans to make an inspection on end of February as requested by the southern railways. Inspection will be done on the completed stretch till Adambakkam Railway Station.[56]
• 19 February 2021 Court rejected the case filed by the state government of Tamil Nadu(CMDA) which caused hindrance in Land acquisition and compensation on last 500m stretch.[57] Puzhuthivakkam and Adambakkam Railway stations are nearing completion. Southern Railways plans to extend chennai MRTS till st. Thomas Mount by 2022[58] and tenders for the construction of last 500m will be floated soon with a construction time of 18 months.
• 28 December 2021 Indian Railways Plans to operationalize this phase 2-B stretch within 2022[59]
• 1 November 2022 Southern Railways - MRTS connectivity from Velachery to St Thomas Mount to be ready by March 2023

The Chennai MRTS route is largely elevated, with at-grade sections at its terminals. From Beach to Chennai Park Town station, the line runs at grade, parallel to the suburban railway network. Following Chennai Park Town station, the line's first phase becomes elevated and follows the course of the Buckingham Canal, which runs parallel to the Coromandel Coast. The line remains elevated for the alignment of the second phase up to Perungudi, after which it returns to an at-grade section at Velachery. The 19 km (12 mi) line from Chennai Beach to Velachery is 15 km (9 mi) elevated and 4 km (2 mi) at surface.[33] The ongoing 5 km (3 mi) extension of the line from Velachery to St. Thomas Mount is also elevated.

Minor change in the alignment

MRTS crossing in the IT Corridor

In 2001, the Chennai Metropolitan Development Authority (CMDA) proposed a realignment of the MRTS route to St. Thomas Mount and combined it with the Inner Ring Road because it faced difficulties with land acquisition. The Government of Tamil Nadu accepted it in 2006, and an order confirming the changes was passed. About 186 hectares of land that were frozen from development till then were released. However, the alignment was changed further as the Department of Highways deviated from the approved alignment of the Inner Ring Road without consulting the CMDA or the Metropolitan Transport Project (MTP–Railways). These resulted in a deviation of the MRTS alignment in the order of 15 m (49 ft).[31]

Snaking through the central region of Chennai, the alignment covers several significant landmarks of the city and currently has 18 stations. The Chennai Beach station is a hub terminal for several suburban trains, and, along with Chennai Fort station, it serves the commercial locations of Broadway and Parry's Corner. Chennai Park Town station is located opposite Chennai Central, which is a hub for both long-distance express trains and suburban trains. Places of tourist interests such as Parthasarathy Temple and Kapaleeshwarar Temple are located close to Thiruvallikeni and Thirumayilai MRTS stations, respectively. Marina Beach spans along the stretch of the Thiruvallikeni and Light House stations, in addition to the Chepauk station, which lies abutting the Chepauk Stadium. The MRTS also passes through those areas of Chennai where the information technology (IT) industry is located—while the Kasturba Nagar, Thiruvanmiyur and Indira Nagar stations are located on the IT corridor, the neighbourhoods of Perungudi, Taramani and Velachery also have IT establishments. The St. Thomas Mount station at the southern end of the alignment, upon completion, will have three different types of railway networks, namely, the suburban and long-distance express trains plying on the conventional tracks at grade level, the MRTS elevated station at level 1 and the Chennai Metro Rail at level 2. The station would be having an area of about 48,000 m² (516,668 sq ft) and would be designed to integrate five different modes of transport including MTC buses.[60][61][62]

Each station is designed by a different architect and is built to accommodate a 9-car train.[63] Most stations also feature two-side platforms.

In many aspects, the Chennai MRTS bears greater resemblance to the Chennai Suburban Railway as opposed to a true rapid transit line. MRTS uses the same gauge as the suburban system, thus allowing the movements of passengers between the existing suburban lines and the MRTS.[65] Owing to this reason, the trains run on the MRTS are 'normal' EMUs and do not have automatic doors like a metro train. Ballastless track is used between Tirumailai and Velachery.[66] The elevated tracks are built at an average height of about 14 metres from the ground.[67]

There are various plans to use the empty space in the MRTS stations.[68]

• Food stalls at MRTS stations

In February 2009, IRCTC envisaged to set up food stalls at 12 MRTS stations.[69] But the food stalls have not materialised hitherto.[70]

In September 2013, the IRCTC decided to initially set up food stalls at three key MRTS stations Tirumailai (Mylapore), Thiruvanmiyur and Velachery with multiple shops and serve multi-cuisine food similar to the setup at Chennai Central railway station.[71][72]

In April 2018, IRCTC opened the first food plaza at Thiruvanmiyur MRTS station.[73] Then IRCTC opened two more fast food joints on the ground floor of the Thirumayilai station and near the platform of Taramani station.

In February 2020, IRCTC has opened a food court at the Velachery MRTS station. The food court, located adjacent to the entrance of the railway station, serve all kinds of vegetarian and non-vegetarian dishes, and was inaugurated by P. Mahesh, Divisional Railway Manager, Chennai division.[74]

• Proposal of Amma Unavagams at MRTS stations

In October 2013, there are plans to open Amma Unavagams, the subsidised canteens run by the Tamil Nadu government, in the huge empty space of MRTS stations.[68]

Commercial exploitation of the space in MRTS stations is not a new idea. However, over the years, many projects have failed to take off. Some years ago, CMDA had proposed the exploitation of space in nine stations across 11.16 km of the second phase of MRTS.

The route length between Chennai Beach and Velachery is 19.34 km (12.02 mi),[33][64] with an average speed of 29 km/h (18 mph), with the current journey time has been 45 minutes.[75][76]

The first train departs from Chennai Beach at 4:15 am, and the last one departs at 9:35 pm. From Velachery, the first train departs at 5:00 am to Chennai beach, with the last train departing Velachery at 10:20 pm.[77] On Sundays, a total of 51 trips are operated.[78] In the peak hours, nine-car trains are used, while six-car trains are operated during the remaining time.[79] Nine-car rakes were introduced in 2008.[80] All services, on the MRTS, were upgraded to 9 cars from Aug-2015 onwards.[81] Two additional services promised in 2012 Railway Budget were introduced only in July 2013.[82]

In July 2016, the Southern Railway extended suburban electric multiple unit (EMU) services from the Mass Rapid Transit System (MRTS) section to Tiruvallur and Gummidipoondi, and later to Arakkonam.[83][84]

MRTS daily patronage

The line currently transports less than 25 percent of its projected passenger capacity.[85] The MRTS experiences a ridership of 78,000 commuters during weekdays and Saturdays. However, there has been a ridership increase from approximately 25,000 people in 2000[11] and 66,518 people in 2008.[86] Incidentally, when the MRTS was extended up to Velachery in 2007, it saw a three-fold increase in the revenue.[87] As of July 2015 the ridership is at 100,000 commuters a day. Commuters point out that the MRTS services could see higher patronage if the railway stations have better bus connectivity, proper maintenance and enough lighting and security.[88]

Of the system's 18 stations, Chennai Park Town, Thirumayilai, Thiruvanmiyur and Velachery account for nearly 40 percent of the ridership.[89][90][91][92] In a measure to increase patronage, the MRTS had adopted several schemes to draw potential passengers.[4][11][93]

As the route passes close to some of the most famous temples of Chennai, the MRTS operates special trains during popular religious festivals such as the Vaikunta Ekadashi at Parthasarathy Temple in Triplicane[94] and Arupathumoovar at the Kapaleeshwarar Temple in Mylapore.[95] Special trains are also run during cricket matches at the M. A. Chidambaram Stadium at Chepauk,[10][96][97] and air shows[98] and Kaanum Pongal at the Marina Beach[99][100][101][102][103][104][105][106] and bus strikes.[107]

For the 10-month period from April 2009 to January 2010, the MRTS earned a total revenue of ₹ 127.6 million: with a fare revenue of (₹ 122.1 million from ticketing sales, ₹ 2.6 million from advertisement sales and ₹ 2.9 million from parking contracts). This is compared with an estimated operating expense of about ₹ 230 million. The operational cost of the entire stretch is about ₹ 1.8 million per day while revenue generated amounts to only ₹ 0.3 million per day.[12]

Average daily passenger earnings

The average number of passengers and the revenue generated per day over the past years are listed below:[12]

The MRTS network registered a 16.25-percent increase in revenue to ₹ 198.9 million in 2011–2012 period.[108]

Some stations lack proper and safe approach roads, thus deterring passengers from reaching the stations. A study jointly conducted by Southern Railways and CMDA is currently in progress, and the survey results would help to identify the infrastructure problems that hinder ridership on MRTS[122][123] and Mono Rail on the need to provide infrastructure like ramps, skywalks, nearby bus stops and pedestrians walkways.[124] Access to the Chennai MRTS remains a crucial issue to the line's success, as it does not fully integrate with other modes of transportation in the city,.[89][110][124][125][126]

Special focus would be on pedestrian facilities that would provide access to MRTS stations from nearby roads and bus stops, apart from identifying new feeder routes for the network.[85] With the completion of connectivity to St. Thomas Mount (expected by 2017), the MRTS will be integrated into the grid of the Chennai Suburban Railway and the Chennai Metro Rail, thus sharing an intermodal transportation interchange with both the systems, when it is expected to reach its full potential due to uninterrupted movement of commuters across different rail lines in the city.[127]

The state and central governments are also working together for the CMRL to takeover the Mass Rapid Transport System (MRTS) so that the latter will get a new shot of blood with modernised stations, integrated ticketing systems, better facilities for passengers, increased frequency of services taking into consideration passenger demands, and also lead to better maintenance.[128]

GPS in an MRTS station showing train timings

The system has also been criticised for improper maintenance of stations[129] and the infrastructure[130][131] and on the windshields of cars parked below the stations,[132] vandalism at several stations, seepage of rainwater through holes in the roofs of stations[133][134] non-functional station amenities such as lifts and escalators,[6][19][70][86][90][135][136][137][138][139][140][141][142][143][144] Station staff have expressed their concern over the Chennai MRTS's safety issues.[4][145][146][147][148][149][150] and conducting various thefts[151][152][153][154][155] In a recent bid to provide improve the security of the passengers using the network, it has been decided that the MRTS stations would have a single entry and exit point as it has been difficult for the RPF personnel to monitor multiple gates at the same time.[90][156][157][158] According to sources, there is a 20% shortage in the strength of the railway protection force in MRTS stations.[159]

The MRTS has been criticised for environmental issues during its construction phase, due to the fact that much of the alignment was built along the banks of the Buckingham Canal.[127][160] Although the canal itself has been in decline due to fly tipping and sewage[161] the Chennai River Restoration Trust has planned to revitalise and redevelop it. However, a 7.1-km section will remain impassable due to the presence of the MRTS. Another environmental impact caused by the erection of MRTS pillars in the canal is the blocking of the natural flow of storm water during rains. This has led to severe stagnation of rainwater in the neighbourhoods adjoining the canal.[162]

Work on the 5 km (3 mi), three-station Phase II extension from Velachery to St. Thomas Mount began in 2008, with an original estimated completion of December 2010.[163][164] The cost of the extension was estimated at ₹ 4,957 million. However, the line has been repeatedly postponed due to multiple issues during its construction process.[165][166] and has now escalated to ₹ 7,340.1 million.[167] This is because of a change in design due to acquisition issues.

Despite the delays, the extension from Velachery to St. Thomas Mount is currently underway. Track laying is progressing on the first 2 km (1 mi) stretch from Velachery. Of the remaining 1.5 km, the last 0.5 km (0 mi) from St. Thomas Mount is being constructed simultaneously with Chennai Metro. Litigation had previously prevented the work from being carried out in the last portion of track laying and the work had been stalled for nearly two years. However, a court ruling was passed in favour of the Chennai MRTS. Now Southern Railway has decided that instead of waiting indefinitely for the land acquisition to finish the link up to Mount, it will start running trains to the stations that are completed

• July 2011 Construction of the stations begins.
• July 2012 According to the Railway Budget 2012, the section would be commissioned by December 2013.[168]
• October 2012 Land acquisition by CMDA has resumed after the Madras High court vacated a stay and construction work is expected to resume once the acquired land is transferred to the Railways. Land acquisition on the 5-km stretch resumed to be completed in 45 days.[6][37]
• April 2013 expected to be completed by February 2013 but legal wrangles continue to obstruct the development[38]
• July 2013 The extension of the network has hit a cul de sac near Thillai Ganga Nagar due to difficulty in procuring the land from the locals.[40][169]
• May 2014 3.7 km of the 5-km stretch of the MRTS line completed. Work is expected to resume, in a month, after the beneficiaries who had approached the High Court against the acquisition of 500 metres of land are expected to be compensated under the Indian government's new Land Acquisition Act, that came into effect on 2014, replacing a 119-year-old obsolete legislation.[41]
• October 2014 Few of the residents again approached court demanding higher compensation, based on the Land Acquisition Act 2013 - that came into force from 1 January 2014.[42]
• July 2015 As many as 18 cases filed in Madras High Court to fix the compensation under the new Land Acquisition Act - and the project was not expected to be complete before December, 2016.[170]
• 6 August 2015 the High Court directed the authorities to follow the new law enacted in 2013 that gave better compensation to land owners and to complete the exercise as expeditiously as possible and not later than three months.[44]
• November 2015 Revenue Officials state that land acquisition process had been put on hold as they were engaged in flood-relief work.[45]
• March 2016 Southern Railway General Manager states that MRTS final phase will take at least 18 more months from the date of receiving land (for the last 500 meters) from State Government - which is yet to start the process of acquiring land as per new rates.[46]
• November 2018 discussion between residents and Chennai Metropolitan Development Authority fails again [47][48]
• January 2019 Court dismisses a batch of 40 petitions challenging land acquisition for the project [49]
• July 2019 In nine months, MRTS extends the service up to Adambakkam [50]
• August 2019 Railway Minister Piyush Goyal assures MRTS completion in 18 months [51]
• January 2020 Land acquisition problems still continued by Land owners even after the court's order[52]
• 10 September 2020 Railway officials plans to operate shuttle services in-between the completed stretch of Adambakkam to Velacherry MRTS.[53]
• 21 September 2020 CMDA Officials Filed a case regarding the Land acquisition once again[54]
• 31 December 2020 Finally the Buildings present in the last 500 m stretch gets demolished and the land is being ready to handed over to Indian railways for Construction of the last 500 m stretch, and announced soon tender will be floated.[55]
• 13 January 2021 Commissioner of Rail Safety (CRS) Plans to make an inspection on end of February as requested by the southern railways. Inspection will be done on the completed stretch till Adambakkam Railway Station.[56]
• 19 February 2021 Court rejected the case filed by the state government of Tamil Nadu(CMDA) which caused hindrance in Land acquisition and compensation on last 500m stretch.[57] Puzhuthivakkam and Adambakkam Railway stations are nearing completion. Southern Railways plans to extend chennai MRTS till st. Thomas Mount by July 2022[58] and tenders for the construction of last 500 m will be floated soon with a construction time of 18 months.

The extension will be on an elevated structure whose alignment will be along the median of the Inner Ring Road (IRR) up to 3.585 km (2.228 mi) from Velachery, except for a small portion near Medavakkam Road. Beyond 3.585 km (2.228 mi), the alignment would deviate from IRR and would pass through the private built-up areas and terminate at St. Thomas Mount station. There are two stations en route, namely, Puzhithivakkam (1.85 km (1.15 mi) from Velachery) and Adambakkam (2.85 km (1.77 mi) from Velachery). All three stations, including St. Thomas Mount, will be on an elevated structure. Unlike stations on the Tirumailai–Velachery stretch, only minimum passenger amenities will be provided at the stations and no commercial complexes are planned. Due to spatial constraints, the stations are being built in a smaller design, with four staircases with escalators covering both sides of the road.[171][172]

The extension up to St. Thomas Mount is believed to benefit several people including those working in the IT establishments, residences and other offices near to the MRTS network.[173][174] The patronage of the network is expected to increase significantly with this extension because St. Thomas Mount station will emerge as a single point interchange for 5 different modes of public transport – Public Buses, Southern Railway, the MRTS, Suburban South Line and Metro Line 2 – including a multi level terminal for three different suburban railway networks.[108][175] Thus, the Mass Rapid Transit System (MRTS) is likely to be the missing link in the proposed three-way integration at St. Thomas Mount railway station when metro rail is up and running by mid-2014. It also has been further decided to terminate long-distance trains there, so that the city traffic may get reduced.[176]

The third and fourth phases of the MRTS were initially planned to connect St. Thomas Mount with Villivakkam and Villivakkam with Ennore, respectively.[177] However, with the implementation of the Chennai Metro Rail, the plan for developing these two phases have been dropped, since these overlap with the alignment of the Chennai Metro Rail.[178]

In 2008, a proposal was initiated to construct a new railway line from Perungudi MRTS station in Chennai to Pondicherry via Old Mahabalipuram Road (OMR) and East Coast Road (ECR). The line emanating from Perungudi MRTS station is envisaged to be 179 km long and is expected to traverse via Sholinganallur, SIPCOT, Kovalam, Tiruporur, Mamallapuram, Kalpakkam, Koovathur, Cheyyur, Marakkanam, Koonimedu, Kuilappalayam, JIPMER in Pondicherry, Bahour, Varakalpattu, and Tirupadiripuliyur to reach Cuddalore Port Jn.[179] The railway line would run on an embankment.[180] There was also a proposal to extend the line up to Karaikal via Mayiladuthurai.[181] The railway line was sanctioned in the 2007 supplementary budget with an estimated cost of ₹ 5,230 million. However, there has been a delay owing to lack of funds[179] and the project is expected to be completed in about 10 years. To expedite the project, the railway board is looking out for multiple options including private contribution, although the model is not yet finalised.[182] There are also alternative plans of beginning or linking the line to Chengalpet.[183][184][185] This railway corridor is expected to reduce the travel time between Chennai and Pondicherry to two hours against five hours along the present route via Villupuram. In October 2013, the state government started acquiring land for the 179-km project. At that time the project was estimated to cost ₹ 8,000 million.[186]

The MRTS will be merged with Chennai Metro Rail Limited (CMRL) by 2021, for which PricewaterhouseCoopers (PwC) has been appointed as a consultant. Following the merger, the existing suburban trains that the MRTS use will be replaced by air-conditioned trains of Chennai Metro Rail. The fares of MRTS too will be increased to match that of Chennai Metro Rail and the ownership of existing assets of the MRTS will be transferred to CMRL.[187]

In July 2018, PwC said the merger would be a costly affair costing around ₹ 3,000 crore to change the trains and other facilities to facilitate the merger.[188]

On 11 May 2022, Southern Railway granted in-principle approval for the Chennai Metro to takeover the MRTS.[189]