A total of 20 such train sets of Hyundai Rotem will be manufactured in South Korea's Changwan by the end of this year, while the remaining 61 are being manufactured at the Bharat Earth Movers Limited (BEML) plant in Bengaluru, the DMRC said.

They would run on the over 58 km-long Majlish Park-Shiv Vihar (Line 7) and the over 38 km-long Janakpuri (West)-Botanical Garden (Line 8) corridors of the Phase-III, and both these sections are expected to be operational by the end of 2016.

A DMRC official said, although, initially drivers will be deputed for operating the trains they would be gradually withdrawn to move to Unattended Train Operation (UTO).

These new trains of Delhi Metro have undergone significant technological as well as eco-friendly upgrades and many additional features have been added to increase passenger comfort. They are designed for a maximum speed of 95 kmph and operational speed of 85 kmph, Delhi Metro said.

Each coach can accommodate maximum 380 passengers, which translates to 2,280 passengers in each train set of 6 coaches. The cabin-less trains would be able to accommodate 40 commuters more in a six coach train as the driver's cab will not be required in such trains.

"These trains would be more energy efficient than the earlier trains of Delhi Metro because of improved design features such as better regeneration of energy during braking, energy efficient sub systems like  LED lighting and air conditioning systems," the DMRC said.

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