India, May 23 -- With demands for underground Metros gathering steam, a 2010 study by the Indian Institute of Technology-Bombay revealed that 90% of the citizens screened for the study wanted underground Metros in the city.

The study was undertaken on the Charkop-Bandra-Mankhurd route and sampled 1,070 citizens. Professor SL Dhingra, who undertook the study and is also a transport expert, said,"People had said that elevated Metros will lead to a lot of congestion on roads, increase travel time and pollution. Barricading will make travel difficult for seven to eight years. Also, after the construction, pillars will occupy a lane."

There are 13 Metro lines planned for the Mumbai Metropolitan Region of which, only one is fully-underground ...