Multi-Lane Free Flow (MLFF) tolling
Info Nuggets
Removing the ‘stop-and-go’ from highways, MLFF leverages AI and RFID to enable high-speed, barrier-free tolling by 2026
The concept
Multi-Lane Free Flow (MLFF) is a barrier-less electronic tolling system that allows vehicles to pass through tolling points at normal highway speeds (up to 80 kmph) without stopping. Unlike current FASTag lanes that require vehicles to slow down for a mechanical barrier, MLFF uses overhead gantries equipped with high-performance RFID readers, ANPR (Automatic Number Plate Recognition) cameras and LiDAR for vehicle classification.
Why it matters
Zero waiting time: It eliminates bottlenecks at toll plazas, which currently cause significant fuel wastage and transit delays despite 98% FASTag penetration.
Economic & environmental gains: The government estimates annual fuel savings of ₹1,500 crore and a reduction in vehicular emissions by minimising idling at plazas.
Revenue integrity: By automating the capture of every vehicle registration number (VRN), the system reduces “leakage” and manual intervention, potentially boosting toll revenue by ₹6,000 crore.
Logistics efficiency: Faster turnaround times for freight transport directly reduce India’s overall logistics costs, aiding the “Gati Shakti” vision.
Key challenges
Enforcement: Without physical barriers, deterring non-payment requires a robust legal framework to link toll dues with vehicle insurance renewals or registration transfers.
Tech integration: Ensuring 99%+ accuracy in high-speed data capture under diverse weather conditions and handling "dirty" or "hidden" number plates.
Way forward
India launched its first MLFF pilot at the Choryasi Fee Plaza (NH-48) in Gujarat in 2025. The NHAI plans a nationwide rollout by the end of 2026, shifting from the traditional bank-centric bidding model to an integrated tech-partner model to ensure system reliability.
Final outlook
MLFF represents the final step in the evolution of digital highways from cash to FASTag, and now to “free flow”. By turning highways into seamless “data-driven assets”, India is moving closer to global standards of intelligent transportation and frictionless mobility.
