East West Metro Tunnel under the Hooghly River is the biggest underwater metro tunnel in India.
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The underwater train has been proposed as a new option for travellers to go between Dubai to the city of Mumbai in India. But it's not going to be quick. This is a 1,200-mile journey that can be used as public transport, but also as a carrier for water and oil, with the speed set to a staggering 600–1000 km/h.
The Delhi Metro has been undergoing construction in phases. Phase I consisted of 59 stations and 64.75 km (40.23 mi) of route length, of which 13.0 km (8.1 mi) is underground and 52.0 km (32.3 mi) surface or elevated.
Because underground metro system is costlier, time consuming, challangeable. On the other side elevated metro system is less expensive and safer. Fire hazards can be more dangerous in underground system. When there is no option of making elevated system then only they go for underground system.
The Shanghai Metro is the world's longest metro network at 803 kilometres (499 mi) and has the highest annual ridership at 2.83 billion trips. The New York City Subway has the greatest number of stations with 472. As of 2023, the country with the most metro systems is China, with 45 in operation.
THE world's fastest metro system train is the Maglev or Transrapid which runs by way of magnetic levitation on the Longyang Road to Pudong International Airport line of the Shanghai Metro in China.
The Seikan Tunnel (Japanese: ??????, Seikan Tonneru or ????, Seikan Zuido) is a 53.85 km (33.46 mi) dual-gauge railway tunnel in Japan, with a 23.3 km (14.5 mi) portion under the seabed of the Tsugaru Strait, which separates Aomori Prefecture on the main Japanese island of Honshu from the northern island of Hokkaido.
New Delhi: With 160 kmph speed, the Delhi-Meerut Regional Rapid Transit System (RRTS), will be the fastest Metro service in the country. The authorities have recently conducted a high-speed run on the stretch and the Alstom-made trains attained a maximum speed of 160 kmph.
With a total length of about 190 kilometers serving 139 stations, Delhi Metro is the world's thirteenth largest metro system. Mumbai Metro currently covers a total length of 62.68 km serving 12 stations.
For a big and crowded city like Mumbai, India Public Transit should have been way better. The absolute snail's pace at which the Metro project is progressing makes me praise the Delhi metro which is the best system in India. Plus points to Chennai Metro for the airport connectivity.
With a connectivity length of 390 km, the Delhi Metro is the longest metro network in the country. Namma Metro, also known as Bengaluru Metro, is the second longest operational metro network, with a total length of 68.6 km.
Kolkata metro holds the record of being India's first metro service. It was introduced in the year 1984. It started from Esplanade to Bhowanipur (Now Netaji Bhawan) for 3.4 km and served 5 stations initially. The Kolkata Metro was India's first underground rail system, similar to the London tube system.