- NHAI issued guidelines to standardise design and infrastructure for Multi-Lane Free Flow (MLFF) Tolling. - Aims to implement barrier-free electronic toll collection on national highways of four lanes and above. - Seeks to eliminate congestion at toll plazas, reduce vehicle wait times, and lower fuel consumption and carbon emissions. - Involves modernising highway infrastructure with advanced overhead gantry systems, automatic number plate recognition (ANPR), and RFID technologies. - **Multi-Lane Free Flow (MLFF) Tolling:** A modern technology-driven toll collection system that allows vehicles to pass through toll plazas at highway speeds without stopping at physical barriers, using RFID and ANPR cameras. - **National Highways Authority of India (NHAI):** An autonomous statutory body under the Ministry of Road Transport and Highways responsible for the development, maintenance, and management of national highways in India. **Introduction** The National Highways Authority of India (NHAI) has released comprehensive guidelines for standardising design and infrastructure for Multi-Lane Free Flow (MLFF) Tolling on national highways of four lanes and above. This initiative is designed to transition India's highway network toward barrier-free electronic toll collection, eliminating traditional toll booths to reduce traffic congestion, improve logistics efficiency, and minimize environmental impact. **Core Issue and Detailed Points** - NHAI issued guidelines to standardise design and infrastructure for Multi-Lane Free Flow (MLFF) Tolling. - Aims to implement barrier-free electronic toll collection on national highways of four lanes and above. - Seeks to eliminate congestion at toll plazas, reduce vehicle wait times, and lower fuel consumption and carbon emissions. - Involves modernising highway infrastructure with advanced overhead gantry systems, automatic number plate recognition (ANPR), and RFID technologies. **Key Statutory Bodies, Acts & Concepts** - **Multi-Lane Free Flow (MLFF) Tolling:** A modern technology-driven toll collection system that allows vehicles to pass through toll plazas at highway speeds without stopping at physical barriers, using RFID and ANPR cameras. - **National Highways Authority of India (NHAI):** An autonomous statutory body under the Ministry of Road Transport and Highways responsible for the development, maintenance, and management of national highways in India.