FASTag are stickers affixed to the windscreen of Vehicles. They use RFID technology to collect toll from the traffic. The tags are linked to ban account and they are charged or top up. The amount is detected directly from the account.
According
to NHAI, these Tags will ensure seamless travel of traffic and will also ensure the prevention of toll leakage. This will also save lot of fuel. One Nation One FASTag- The scheme will be implemented from December 1, 2019, and can be availed upon activation by new cars having Radio Frequency Identification (RFID) tags on national and state highways throughout the country. The plan aims to integrate the collection of toll digitally and ensure seamless mobility of vehicles across India. The payment method is a part of the National Electronic Toll Collection (NETC) programme. The National Payments Corporation of India (NPCI) collects the payments.