The M25 or London Orbital Motorway is a major road encircling most of Greater London. The 117-mile (188-kilometre) motorway is one of the most important roads in the UK and one of the busiest. Margaret Thatcher opened the final section in 1986, making the M25 the longest ring road in Europe upon opening. The Dartford Crossing completes the orbital route but is not classed as motorway; it is classed as a trunk road and designated as the A282. In some cases, including notable legal contexts such as the Communications Act 2003, the M25 is used as a de facto alternative boundary for Greater London.
The M1 motorway connects London to Leeds, where it joins the A1(M) near Aberford, to connect to Newcastle. It was the first inter-urban motorway to be completed in the UK; the first motorway in the country was the Preston Bypass, which later became part of the M6.
Traffic congestion is a condition in transport that is characterized by slower speeds, longer trip times, and increased vehicular queueing. Traffic congestion on urban road networks has increased substantially since the 1950s. When traffic demand is great enough that the interaction between vehicles slows the traffic stream, this results in congestion. While congestion is a possibility for any mode of transportation, this article will focus on automobile congestion on public roads.
The A23 road is a major road in the United Kingdom between London and Brighton, East Sussex, England. It is managed by Transport for London for the section inside the Greater London boundary, Surrey County Council and West Sussex County Council for the section shadowed by the M23 motorway, National Highways between the M23 and Patcham, and by Brighton and Hove Council from the A27 to the centre of Brighton.
The A14 is a major trunk road in England, running 127 miles (204 km) from Catthorpe Interchange, a major intersection at the southern end of the M6 and junction 19 of the M1 in Leicestershire to the Port of Felixstowe, Suffolk. The road forms part of the unsigned Euroroutes E24 and E30. It is the busiest shipping lane in East Anglia carrying anything from cars to large amounts of cargo between the UK and Mainland Europe.
The A21 is a trunk road in Southern England, one of several which connect London and various commuter towns to the south coast. It provides a link to Hastings, East Sussex and parts of Kent. Half of the distance covered is over gently undulating terrain, with some hills and bends. Often traffic is slow-moving, particularly on weekdays on the short single carriageway stretches; and in summer with holiday traffic. Because of this, people have described the A21 as "a joke" and businesspeople have been reported to "hate coming down the A21". There have been many proposals to upgrade parts of the A21 in response to this.
The A25 road is an east–west main road in the South-East of England. Its carries traffic east from Guildford, Surrey, eastward through Surrey and into mid-west Kent, to the town of Sevenoaks, and then on to Wrotham Heath where it connects with the A20.
Traffic Message Channel (TMC) is a technology for delivering traffic and travel information to motor vehicle drivers. It is digitally coded using the ALERT C or TPEG protocol into Radio Data System (RDS) carried via conventional FM radio broadcasts. It can also be transmitted on Digital Audio Broadcasting or satellite radio. TMC allows silent delivery of dynamic information suitable for reproduction or display in the user's language without interrupting audio broadcast services. Both public and commercial services are operational in many countries. When data is integrated directly into a navigation system, traffic information can be used in the system's route calculation.
Traffic cones, also called pylons, witches' hats, road cones, highway cones, safety cones, caution cones, channelizing devices, construction cones, roadworks cones, or just cones, are usually cone-shaped markers that are placed on roads or footpaths to temporarily redirect traffic in a safe manner. They are often used to create separation or merge lanes during road construction projects or automobile accidents, although heavier, more permanent markers or signs are used if the diversion is to stay in place for a long period of time.
A diverging diamond interchange (DDI), also called a double crossover diamond interchange (DCD), is a subset of diamond interchange in which the opposing directions of travel on the non-freeway road cross each other on either side of the interchange so that traffic crossing the freeway on the overpass or underpass is operating on the opposite driving side from that which is customary for the jurisdiction. The crossovers may employ one-side overpasses or be at-grade and controlled by traffic lights.
The European Organisation for the Safety of Air Navigation, commonly known as Eurocontrol, is an international organisation working to achieve safe and seamless air traffic management across Europe. Founded in 1963, Eurocontrol currently has 41 member states with headquarters in Brussels, Belgium. It has several local sites as well, including an Innovation Hub in Brétigny-sur-Orge, France, the Aviation Learning Centre (ALC) in Luxembourg, and the Maastricht Upper Area Control Centre (MUAC) in Maastricht, the Netherlands. The organisation employs approximately two thousand people, and operates with an annual budget in excess of half a billion Euro.
Traffic police are police officers, units, and agencies who enforce traffic laws and manage traffic. Traffic police include police who patrol highways, direct traffic, and address traffic infractions. They may be a separate agency from a main police agency, a unit or division within a police agency, or a type of assignment issued to officers; they can also be part of a transportation authority or highway authority.
Transport in the European Union is a shared competence of the Union and its member states. The European Commission includes a Commissioner for Transport, currently Adina Ioana Vălean. Since 2012, the commission also includes a Directorate-General for Mobility and Transport which develops EU policies in the transport sector and manages funding for Trans-European Networks and technological development and innovation, worth €850 million yearly for the period 2000–2006.
The Waikato Expressway is a dual carriageway section of State Highway 1 in New Zealand's Waikato region. Constructed in stages, it forms part of the link between Auckland and Hamilton. Currently stretching from Auckland to south of Cambridge, the first section of the highway was built in 1993. Throughout its lifetime, it has undergone many upgrades to optimise traffic flow throughout the Waikato region, including various bypasses of many towns in the region, culminating with Hamilton in 2022.
The A2 motorway is a motorway in the Netherlands. It is one of the busiest highways in the Netherlands. The road connects the city of Amsterdam, near the Amstel interchange with the Belgian border, near Maastricht (NL) and Liège (B), and the Belgian A25 road.
The Olivier Charbonneau Bridge is a toll bridge over the Rivière des Prairies, between Laval's St. François district and Montreal's Rivière-des-Prairies–Pointe-aux-Trembles borough. Along with the Serge-Marcil Bridge, it is one of two toll bridges in Quebec.
Driver location signs are signs placed every 500 metres (550 yd) along each side of English motorways, and some other major English roads, to provide information that will allow motorists to know their precise location. As of July 2009, roads in England, but not Scotland, Wales or Northern Ireland, have these signs. This information might be useful in the event of an emergency or breakdown. They were first introduced in 2003, and they complement distance marker posts. Both types of sign display a unique location number. The number, although given without units, is the distance in kilometres from a designated datum location for the road, although signs meant for driver navigation are in miles.
The Catthorpe Interchange is a major intersection at the southern end of the M6, the western end of the A14 and junction 19 of the M1 near the village of Catthorpe in Leicestershire, England. It was developed in 1994 when the link to the A14 was added to the pre-existing M1/M6 junction by joining the M1, M6 and A14 to the country lane between Catthorpe and Swinford as part of the Trans European Road Network,.
E25 
E25 / A 2 at the Netherlands border
N90 / N610 in Liège
