By definition a road junction is a location where vehicular traffic going in different directions can proceed in a controlled manner designed to minimize accidents.
However, in most cases big road junctions are nightmares with a lot of people stuck in traffic ensuring many are unable to arrive at their destination on time.
I-710 and I-105 Interchange, Los Angeles, California, US
A very busy and frequently congested junction in South Los Angeles.
The Magic Roundabout, UK
In Swindon town centre, it was constructed in 1972 and consists of five mini-roundabouts arranged in a circle. It was voted the fourth scariest junction in Britain with many drivers, especially learner drivers, having problems with the Magic Roundabout.
Tom Moreland Interchange, US
Completed in 1987, this four-level interchange required 120,000 cubic yards of concrete. More than 280,000 vehicles travel the interchange daily but the traffic usually moves at a steady rate.
The Puxi Viaduct in Shanghai
One of Shanghai’s busiest and largest interchanges, the Puxi Viaduct caters to thousands of vehicles every hour. It has five levels of bridges that help connect two of the city’s busiest highways.
Judge Harry Pregerson Interchange
The Judge Harry Pregerson Interchange is a stack interchange in California. It has three levels of transfer facilities, including direct HOV connectors between the two freeways.
Putrajaya is home to the world’s longest roundabout. The roundabout houses three major landmarks: the Istana Melawati, the Petra Perdana Landmark and the Putrajaya Shangri-La Hotel.
Taganskaya Square, Moscow
A large, circular avenue that runs around the centre of Moscow city, the Taganskaya Square is situated at the south-eastern corner of Garden Ring. Traffic on the Garden Ring is usually very heavy and things can get even worse as you approach the Square’s complex junction of roads.
De Julio Avenida, Buenos Aires, Argentina
At 140 meters, it is the world’s widest avenue. It has 14 lanes, 7 in each direction and motorists drift across them at will. It takes nerves of steel to get behind the wheel.
Gravelly Hill Interchange, Birmingham, UK
Gravelly Hill Interchange is junction 56 of the M6 motorway where it meets the A38(M) Aston Expressway in Birmingham. The engineers had to elevate 13.5 miles of the motorway to accommodate 2 railway lines, 3 canals and 2 rivers. It is the most complicated junction in the United Kingdom.