While the Mumbai Metropolitan Region Development Authority (MMRDA) has been claiming that the Metro line II should be elevated, the group of NGOs and citizen groups which have come together and formed a group called as Apna Mumbai Abhiyaan. They want the planning authority to construct underground Metro projects against the elevated corridor plan

The group also feels that even though the elevated project costs less as compared to the underground Metro, the delay in completion of elevated project, including cost escalation factors, utility shiftings and other things result in more cost escalation.