NHAI releases uniform standards for India's upcoming high-speed access-controlled highways

The National Highways Authority of India announced a set of uniform technical and safety standards for high-speed, access-controlled national highways, excluding expressways. These rules cover the preparation of Detailed Project Reports for upcoming 4-lane and 6-lane greenfield and brownfield projects, seeking consistency across the network. They support the government's Viksit Bharat 2047 vision of 50,000 km of high-speed corridors, aiming to boost connectivity and lower logistics costs.

The guidelines prescribe lane widths of 60 m or 70 m depending on traffic flow, and require advance notification of exits and entries for safer navigation. Interchanges with ramps must be provided at crossings with major roads and at sites serving ports, airports, logistics parks, industrial zones and tourist destinations.