FASTag vs GNSS based system: Key differences
FASTag uses RFID (radio frequency identification device) technology. A sticker with an embedded chip is affixed to the windshield of the vehicle and toll plazas are equipped with scanners that detect FASTag and collect the toll automatically. However, FASTag requires stopping at toll plazas equipped with RFID scanners, and although these lanes are faster than ticket counter lanes, queues can still form during peak hours.
Payment for FASTag requires upfront topping up of the linked account, requiring users to maintain sufficient balance to pay tolls seamlessly.
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Satellite fees or GNSS, on the other hand, has virtual toll booth units installed on highways that communicate with satellites and track vehicles to track location and calculate distance traveled toll deduction. This system eliminates the need for physical toll plazas by setting up virtual toll plazas along highways and making it easier hassle-free journey without stopping. Satellite tolls provide greater payment flexibility as they can support both prepaid accounts and distance-based postpaid billing. It is not yet known what system will be used in India.
The good news is that the modern GNSS system will work with FASTag in a hybrid model, ensuring a silky transition. While you won’t need to replace your FASTag device immediately, you may need GNSS-enabled devices in the future.