- Contents Indian Road Network National Highways Fund Requirements Policy Initiatives NH Acts & Govt Circular What is NHDP Maps: NHDP Golden Quadrilateral NH-2 Delhi-Kolkata NH-4 Mumbai-Chennai NH-5 Kolkata-Chennai NH-8 Delhi-Mumbai NSEW Corridors NHDP Financing Progress: NHDP NH2 Delhi-Kolkata NH4 Mumbai-Chennai NH-5 Kolkata-Chennai NH-8 Delhi-Mumbai NSEW Corridors Individual Projects NHDP ...www.nhai.org/index.html