The North Circular Road is a major road in London, England, that forms part of the A406. It runs in a circular route around the northern part of the city, connecting various neighborhoods and providing access to key areas. The road is primarily used for local traffic and serves as an important route for commuters. Originally constructed in the early 20th century, the North Circular has undergone several upgrades and improvements over the years. It intersects with other major roads, including the M1 motorway and the A40, facilitating travel to and from central London and surrounding regions.