North Circular Road

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The North Circular Road (officially the A406 and sometimes known as simply the North Circular) is a ring road around Central London in England. It runs from Chiswick in the west to Woolwich in the east via suburban North London. It connects lots of suburbs and other trunk roads in the region. Together with the South Circular Road, it forms a ring road around central London. This ring road does not make a full circuit of the city. Instead, it is C-shaped. This is because the crossing over the River Thames in the east is made on the Woolwich Ferry.
Route.
The North Circular Road is the northern part of a ring-road around Central London. It has seen much more investment than the South Circular Road, and it runs on much wider roads. Existing houses were demolished for the North Circular Road. The route has other names at some points. However, it is mostly called the North Circular for route planning purposes. The route is mostly grade-separated dual carriageway from the A40 at Hanger Lane to the A13 in Beckton except for the Drury Way/Brentfield Road junction, the Golders Green Road/Brent Street junction, Henlys Corner and the section from Bounds Green to Green Lanes. In worse sections, the original names such as Gunnersbury Avenue and Bowes Road are used.
Junctions.
The North Circular Road has a lots of different junctions that connect to other roads. Some are complex and grade-separated, like at Charlie Brown's Roundabout near Woodford. Some are at-grade junctions with traffic lights. The original road only had at-grade junctions. Many of these were improved and grade separated in the late 1970s and early 1980s.