Toll collection at some 65 road projects have already stopped.
Fintech giant Paytm claimed it is selling more FASTags than all the banks put together on a daily basis.
On the Delhi-Mumbai highway, Rs 1,200 crore (Rs 12 billion) worth of fuel will be saved annually after the installation of ETC, the minister said.
The intention is to have a model with a single-clearing house.
Indian roads are far more unsafe than its railways. A sense of urgency is required to tackle India's embarrassing record on road safety.