The Jayakar Committee in 1928 recommended that road development become a national priority funded by a central road fund from petrol taxes. It suggested forming a technical advisory body and research organization. This led to the 1943 Nagpur Road Conference that established India's first long-term, 20-year road development plan to increase roads to 16km per 100 sq km including highways, major roads, and a grid of rural roads totaling 200,000km. The plan classified roads into national highways, state highways, major district roads, and village roads.