"There is no choice but to have a regulator. Because if you want private sector to come, then you need to have to have a regulatory authority," Prabhu said at a CII conference here.
He said this when asked to comment on the Bibek Debroy committee's recommendations for setting up of an independent regulatory authority to attract private investment in railways.
The Debroy committee, in its interim report, has recommended constitution of an independent regulatory body to provide a level-playing field to private players, who have been reluctant to enter the railway sector.
"It should be accountable to Parliament and not to the government and that is very essential," Prabhu added.
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The Debroy committee has recommended that Railway Regulatory Authority of India should have the powers and objectives of economic regulation, including, wherever necessary, tariff regulation, safety regulation and fair access regulation.
Prabhu said the only question is how to do it and how to make it in a better way.
The panel has advocated that the regulator should have independent budget and it must be set up statutorily so that it is truly independent of the Railway Ministry.