Advantages are
1. People can reach places faster
2. If they miss a train it is all right as there is a train every two and a half minutes
3. There are lesser chances of a delay
advantages- it breaks the barrier of time and cost. you reach a place very fast. people who work in office if the go to office at 6:00 so there is no problem as the metro runs from 6:00 am to 11:00 pm so don't worry.....
Underground metro system is having very high investment cost but the overall life cycle cost of underground metro system is very less and it has many advantages :
kolkata metro
India%27s_improving_economy_through_aviation_industry
Kolkata Metro is first underground railway in India. It was the first such form of transport in India, opening for commercial services in 1984. It is the 17th zone of the Indian Railways system.Source - TravelKhana.com
Delhi Metro is the latest technological eco-friendly ticketing metro service
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kolkata metro
a random person invented the metro in India
metro
kolkata metro
the answer is metro
The oldest metro system is London Underground
A metro refers to an electric railway that operates underground in a given city.
underground train i think
The Paris Métro is an electric underground railway system; the term metro is also used in other countries to define a rapid transport system, not necessarily underground.
Yes, it's called the Metro.
Underground in London, England.
Underground Metro Station is an antonym for subway.