London congestion charge in the context of "Congestion pricing"

The A400 road is an A road in London that runs from Charing Cross (near Trafalgar Square, in London's West End) to Archway in North London. It passes some of London's most famous landmarks.

The Northern line (Charing Cross and High Barnet branches) runs beneath the A400 between Charing Cross and Archway stations. Between Charing Cross and Euston Road (Inner Ring Road), the road is in the London Congestion Charge zone.

Road pricing are direct charges levied for the use of roads, including road tolls, distance or time-based fees, congestion charges and charges designed to discourage the use of certain classes of vehicle, fuel sources or more polluting vehicles. These charges may be used primarily for revenue generation, usually for road infrastructure financing, or as a transportation demand management tool to reduce peak hour private vehicle travel and the associated traffic congestion or other social and environmental negative externalities associated with road travel such as air pollution, greenhouse gas emissions, visual intrusion, noise pollution and road traffic collisions.

In most countries toll roads, toll bridges and toll tunnels are often used primarily for revenue generation to repay long-term debt issued to finance the toll facility, or to finance capacity expansion, operations, and maintenance of the facility itself, or simply as general tax funds. Road congestion pricing for entering an urban area, or pollution charges levied on vehicles with higher tailpipe emissions are typical schemes implemented to price externalities. The application of congestion charges is currently limited to a small number of cities and urban roads, and the notable schemes include the Electronic Road Pricing in Singapore, the London congestion charge, the Stockholm congestion tax, the Milan Area C, and high-occupancy toll lanes in the United States. Examples of pollution pricing schemes include the London low emission zone and the discontinued Ecopass in Milan. In some European countries there is a period-based charge for the use of motorways and expressways, based on a vignette or sticker attached to a vehicle, and in a few countries vignettes are required for the use of any road. Mileage-based usage fees (MBUF) or distance-based charging has been implemented for heavy vehicles based on truck weight and distance traveled in New Zealand (called RUC), Switzerland (LSVA), Germany (LKW-Maut), Austria (Go-Maut), Czech Republic, Slovakia, Poland, and in four U.S. states: Oregon, New York, Kentucky, and New Mexico.

Euston Road is a road in Central London that runs from Marylebone Road to King's Cross. The route is part of the London Inner Ring Road and forms part of the London congestion charge zone boundary. It is named after Euston Hall, the family seat of the Dukes of Grafton, who had become major property owners in the area during the mid-19th century.

The road was originally the central section of New Road from Paddington to Islington which opened in 1756 as London's first bypass. It provided a route along which to drive cattle to Smithfield Market avoiding central London. Traffic increased when major railway stations, including Euston, opened in the mid-19th century and led to the road's renaming in 1857. Euston Road was widened in the 1960s to cater for the increasing demands of motor traffic, and the Euston Tower was built around that time. The road contains several significant buildings including the Wellcome Library, the British Library and the St Pancras Renaissance London Hotel.

The London Inner Ring Road, or Ring Road as signposted, is a 12-mile (19 km) route with an average diameter of 2.75–5.5 miles (4.43–8.85 km), formed from a number of major roads that encircle Central London. The ring road forms the boundary of the London congestion charge zone, although the ring road itself is not part of the zone.

Starting at the northernmost point and moving clockwise, the roads defining the boundary are Pentonville Road, City Road, Old Street, Great Eastern Street, Commercial Street, Mansell Street, Tower Bridge, Tower Bridge Road, New Kent Road, the Elephant & Castle, Kennington Lane, the roads that constitute the Vauxhall Cross one-way system and Vauxhall Bridge, Vauxhall Bridge Road, the roads that constitute the Victoria one-way system, Grosvenor Place, Park Lane, Edgware Road, Old Marylebone Road, Marylebone Road and Euston Road.