NHAI aims to raise funds up to Rs 55,000 crore to undertake expansion of highways and build new expressways. The road transport ministry has recently accorded nod to this proposal. The ministry has recommended new model named Toll-Operate-Transfer under which 75 completed projects of NHAI can be sold to private players for about 15 years and the proceeds can be kept with NHAI. This way the ministry estimates that around Rs 40,000-Rs 50,000 crore upfront revenue can be generated.