|Transit type||straddle-beam Monorail|
|Number of lines||1|
|Number of stations||18|
|Daily ridership||125,000 (estimate)|
|Operation will start||early 2014|
|Operator(s)||Larsen and Toubro and Scomi Rail|
|Number of vehicles||15|
|Train length||4 coaches|
|System length||19.54 km|
|Electrification||750 V DC|
|Average speed||32 km/h (20 mph)|
|Top speed||80 km/h (50 mph)|
The Mumbai Monorail is a monorail system under construction in the city of Mumbai, India as part of a major expansion of public transport in Mumbai. The project is being implemented by Mumbai Metropolitan Region Development Authority (MMRDA), with a consortium of Larsen & Toubro (L&T) and a Malaysian infrastructure firm Scomi Engineering. It will be the first monorail in India, since the Kundala Valley Railway and Patiala State Monorail Trainways (PSMT) were closed in the 1920s. Construction began in January 2009. The first line is scheduled to be completed in 2013, with a trial run scheduled for End November 2013 
Vilasrao Deshmukh, the then Chief Minister of Maharashtra, cleared the notification for construction of a monorail system in Mumbai on 18 August 2008. The system will traverse through Jacob Circle, Wadala, Mahul and Chembur, providing a feeder service to the existing Mumbai Suburban Railway
The two shortlisted consortia to build the line were Bombardier Transportation/Reliance Energy/Hitachi Monorail, and Larsen and Toubro/Scomi Rail. On 11 November 2008, the winner was announced to be Larsen and Toubro along with Malaysian partner Scomi, who received a 24.6 billion (US$380 million) contract to build and operate the monorail until 2029.
Construction of Mumbai Monorail started in January 2009 along the Chembur – Wadala – Jacob Circle route and was scheduled to be completed in April 2011. Due to delays, the deadline for operation of the first phase of the line, between Chembur and Wadala, was postponed to August 2012, and then 15 September 2013. However, the latest deadline was missed and MMRDA have not announced a new date. The second portion, from Jacob Circle to Wadala, is expected to be ready by December 2013.
A 108-meter test run was successfully conducted on 26 January 2010. The monorail had its first test run on 18 February 2012 from its yard in Wadala to a station at Bhakti Park, a distance of around a kilometre. Scomi, the Malaysian company that supplied the rakes for the project, was in charge of the trial. The MMRDA will decide whether the Singapore-based SMRT or the Hong Kong-based Mass Transit Rail will be given the task of certifying the monorail system. This is because the Commissioner of Railway Safety (CRS) had said it didn’t have the capacity to certify the monorail, as it was a different system from the railways. The electrical workings of the monorail will be certified by the Electrical Inspector General.
The MMRDA invited proposals from agencies for securing, maintaining and leasing of bulk commercial advertisement rights to display advertisements on monorail piers and for securing advertisements at all the seven stations on the Chembur-Wadala corridor. The appointed agency will fix, maintain secure advertisements for the station areas and maintain monorail piers by removing all unwanted posters, stickers, drawings, graffiti etc. and also lease advertisement rights of these piers for commercial advertisements.
In a meeting between Larsen & Toubro and MMRDA official, held on 23 August 2013, the MMRDA raised concerns over the lack of trains, inadequate safety measures, technical faults and inexperienced staff working on the project. MMRDA metropolitan commissioner UPS Madan warned that the MMRDA would be forced to impose penalties and initiate legal action against the contractors in case of accidents.
The Mumbai Monorail master plan proposed the construction of 8 lines at a cost of 202.96 billion (US$3.1 billion). Further development of the monorail system is on hold until the current line opens and none will be opened before 2019; furthermore questions have been raised as to whether the monorails planned will have sufficient capacity for Mumbai's requirements. 
|Line 1 (Mumbai Monorail)-- Chembur – Wadala – Jacob Circle/Saat Raasta (Sant Ghadge Maharaj Chowk)||19.54||27.16 billion (US$420 million)|
|Mulund – Goregaon – Borivali||30||41.7 billion (US$640 million)|
|Virar – Chikhaldongri||4.60||6399 million (US$98 million)|
|Lokhandwala – SEEPZ – Kanjurmarg||13.14||18265 million (US$280 million)|
|Thane – Mira-Bhayandar – Dahisar||24.25||33708 million (US$520 million)|
|Kalyan – Ulhasnagar – Dombivli||26.40||36696 million (US$560 million)|
|Chembur – Ghatkopar – Kopar Khairane||16.72||36863 million (US$560 million)|
|Mahape – Shil Phata – Kalyan||21.10||29329 million (US$450 million)|
|Thane – Bhiwandi – Kalyan||30||37.5 billion (US$570 million)|
In September 2011, the MMRDA said that did not have an immediate plan to start the construction of a second monorail in the region. They clarified that although it did not mean that they are not interested in carrying out the project, it may not follow the currently planned schedule. The MMRDA decided to put on hold all plans for the expansion of the monorail till the first route was commissioned. An MMRDA official stated, "There is no point in going for new routes. As long as the first route is not commissioned and the results are not out, we would not commission any new routes". MMRDA feels the need for a monorail would arise after all the proposed metro rail routes were commissioned with the monorail serving as a feeder service.
The cost of setting up the monorail service is roughly 850 million (US$13 million) per km. The complete network of about 135 km is recommended for development from year 2011 to 2031 in phases at the total cost of 200 billion.
According to studies conducted by the Mumbai Regional Development Authority (MMRDA) during the monorail trial run, it was found that the monorail produces between 65 – 85 decibels of noise, significantly lower than the 95 decibel noise level of a BEST Bus.
The monorail will have a top speed of 80 kilometres per hour (50 mph), an average speed of 65 kilometres per hour (40 mph) and the overall speed including dwell time at stations would be around 31 kilometres per hour (19 mph).
Capacity and frequency
The capacity of each four-car consist is 568 commuters under a 'crush load'  and 852 passengers for a six-car consist. There are roughly 18 seated and 124 standing passengers per carriage (the end cars have a different capacity due to the driving position). The system has been designed for a 3 minute headway with operation from 05:00 to 24:00. The projected peak-hour traffic is 7,400 passengers per hour per direction with 125,000 passengers per day; this is projected to rise to 8,300 and 300,000 respectively by 2013.
The MMRDA has stated that the monorail will operate in a single shift from between 7am and 3pm, for the first two months of operation. The MMRDA claimed that the decision was because it wanted to cautiously roll out the system, as the monorail system was nascent in the country, its staff were new to monorail operations, and uncertainty over passenger traffic. Within two months of operations, the contractor in charge - a consortium of Larsen & Toubro and Malaysia's Scomi Engineering, will operate the monorail from 7 am to 7 pm. Full-fledged operations of 19 hours, from 5am to midnight, are expected to start only by February 2014.
- "MMRDA – Projects – Monorail". Mmrdamumbai.org. 26 January 2010. Retrieved 2010-08-25.
- "Water transport slips out of MMRDA's hands". Mumbai Mirror. Retrieved 2010-08-27.
- "Brace up for ride in a metro, News – City". Mumbai Mirror. Retrieved 2012-02-17.
- "Malaysian company says won bid to build India's first monorail". USA Today. 10 November 2008. Retrieved 17 February 2012.
- "Mumbai monorail to run in two years". The Times of India. 27 September 2007. Retrieved 2009-03-19.
- "Mumbai monorail to be ready by Dec, Metro by March". 12 June 2012.
- Mehta, Manthan (08 October 2013). "Monorail to ply only 5 hours a day initially". The Times Of India. Retrieved 29 October 2013.
- Mumbai monorail likely to be operational by August - Times Of India. Articles.timesofindia.indiatimes.com (2013-02-16). Retrieved on 2013-07-16.
- Devraj Dasgupta, TNN, 14 Aug 2008, 06.25 am IST (14 August 2008). "Deshmukh makes way for 1st monorail project". Timesofindia.indiatimes.com. Retrieved 2010-08-25.
- "Financial bids for Mumbai Monorail project open|date=2008-06-25". Business-standard.com. 25 June 2008. Retrieved 2010-08-25.[dead link]
- "Scomi's Mumbai Monorail Project Takes Off". Business Times. 10 Feb 09. Retrieved 2009-03-20.
- "End-to-end trial run of monorail conducted". Indian Express. 23 November 2012. Retrieved 2012-12-14.
- [dead link]
- DNA Correspondent (22 March 2012). "Monorail-II only by Dec 2013". DNA India (Mumbai). Retrieved 15 July 2012.
- "Trial run of monorail successful in Mumbai – Oneindia News". News.oneindia.in. 26 January 2010. Retrieved 2010-08-25.
- "Monorail takes its first ride around town". Mumbai Mirror. 19 February 2012. Retrieved 26 March 2012.
- [dead link]
- Rs 1,700 cr already spent, but monorail is still far from ready. Mumbai Mirror (2013-09-06). Retrieved on 2013-12-06.
- Chembur-Wadala monorail unsafe: MMRDA officials - Mumbai - DNA. Dnaindia.com. Retrieved on 2013-12-06.
- Mumbai: Doubts raised over monorail's safety - Times Of India. Articles.timesofindia.indiatimes.com (2013-09-06). Retrieved on 2013-12-06.
- "you and your city – Travel in city to get easier by 2021". Epaper.hindustantimes.com. Retrieved 2012-02-17.
- "No new metro, monorail routes till 2021?".
- Vijay G Phade. "MMRDA expands Monorail landscape". Accommodation Times. Retrieved 2012-02-17.
- "MMRDA drops second monorail plan, for now". Daily News and Analysis. 23 September 2011. Retrieved 26 March 2012.
- "Mumbai Monorail dream run ends before take-off – Mumbai – DNA". Dnaindia.com. 23 July 2012. Retrieved 2012-12-14.
- MariMari (26 November 2010). "Monorail integration with CR, WR and Harbour Line". Accommodation Times. Retrieved 2012-02-17.
- "Mumbai debut for Scomi rail car". Biz.thestar.com.my. 2 January 2010. Retrieved 25 August 2010.
- Country’s first monorail to roll out in Mumbai in August. The Hindu (2013-02-17). Retrieved on 2013-07-16.
- Monorail quieter than BEST bus, say officials - Mumbai - DNA. Dnaindia.com. Retrieved on 2013-07-16.
- "trial run of mumbai monorail photo".
- Mumbai Monorail dream run ends before take-off - Mumbai - DNA. Dnaindia.com. Retrieved on 2013-07-16. (Note: The MMRDA website only mentions four-car trains but other reports indicate six-car operation is planned for in the future and has been allowed for in the design of guideway and stations.)
- "Mumbai's monorail: Key facts you want to know".
- [dead link]
- Attention Mumbaikars! City's first monorail will soon be available between 7 am and 3 pm. daily.bhaskar.com (2013-08-28). Retrieved on 2013-12-06.
- To start with, Monorail will run only for 8 hrs a day. Indian Express (2013-08-28). Retrieved on 2013-12-06.