National Highway 12 (NH 12) is a major roadway in India that connects the city of Kolkata in the state of West Bengal to Rajasthan. It spans approximately 1,200 kilometers, facilitating transportation and trade across several states, including Madhya Pradesh and Uttar Pradesh. The highway plays a crucial role in enhancing connectivity between urban and rural areas, supporting economic activities along its route. NH 12 is part of the larger network of national highways in India, which are vital for the country's infrastructure and development.