Besides Mehta, Delhi Chief Secretary K K Sharma and Durga Shanker Mishra, Additional Secretary of Urban Development Ministry, have also been nominated as its members.
The panel will submit its report within a maximum of three months time.
The Appointments Committee of the Cabinet has approved the proposal for appointment of Justice Mehta, as chairman of the 4th Fare Fixation Committee in the Delhi Metro Railway Corporation Limited (DMRC), an order issued by Department of Personnel and Training said.
Justice Mehta was sworn in as additional judge of Delhi High Court on December 3, 2010. He retired on December 30, 2013.
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As per rules, the central government need to constitute a fare fixation committee for the purpose of recommending fare for the carriage of passengers by the metro railways. The Committee consists of a chairperson and two other members--one each nominated by central and Delhi government.
The panel is mandated to submit its report within a maximum of three months time or before as defined by its terms of reference.
According to an official data, DMRC registered a net loss before tax of Rs 275.46 crore in 2014-15, a whopping increase of 353 per cent from Rs 60.74 crore in 2013-14.
The net loss was to the tune of Rs 7.94 crore in 2012-13.
Recently, DMRC chief Mangu Singh had also hinted that it was time for a fare hike as the current charges did not reflect the increase in costs of operation.
The fares were last revised in 2009.