Funding ..for metro project is done by both ..Delhi govt and Central govt ..
One cant do things on its own ..
Both need each other approval ..to do ..the construction ..work.
I support ..Delhi govt .so i gave credit to it ..u may give to other ..govt ..
And...
more... this info by economics times
"While the DMRC has awarded contract of civil works of Rs 198.78 crore to Larsen and Toubro on December 22, 2014, it shall be DMRC's responsibility to obtain permissions under relevant law and deposit all the fee, wherever applicable, before displaying their advertisements, the release said"
And DMRC contract is given according to the Approval by Delhi govt.