"We will appoint consultants to see what the best model is. PPP has been successful in our country....Work on PPP model
is still going on in Mumbai and Hyderabad (metros). It is not that the PPP models are bad, they are of various types and it is not that one size fits all," Nath told reporters.
"So we will see for various lines, whether PPP can work or not. Is there traffic, capital cost, and how much subsidy is required. We will appoint consultants," he added.
Nath also said that the contentions between the Delhi Metro and Reliance Infra were a "contractual and legal" matter but the Delhi Metro Rail Corporation would continue to run the line.
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"The Airport line would be run by the DMRC so that there is no inconvenience to common citizens. It would be seen from a legal point on what the solution would be," Nath told reporters.
Nath aid that it would be considered as to how the matter should be handled.
In a reply to a separate question. He said that the states of Haryana, Rajasthan and UP had formed their own Metro corporations to expand networks in their states and added that while presently Delhi Metro was the reservoir of expertise and experience, in future the states would build their own metro networks.