NHAI Guidelines to Strengthen Technology Integration and Sustainability in Development of High-Speed National Highway Corridors

The National Highways Authority of India (NHAI) has released comprehensive guidelines for planning and designing High-Speed Access-Controlled National Highways, excluding expressways. Applicable to all upcoming four and six-lane Greenfield and Brownfield corridors, the guidelines emphasize data-driven traffic planning using toll data and freight movement projections. They mandate modern construction methods including Automated and Intelligent Machine-aided Construction (AI-MC), Multi Lane Free Flow (MLFF) tolling, integrated environmental landscaping with drip irrigation, and comprehensive drainage systems featuring water harvesting structures to prevent waterlogging and manage rainwater runoff.