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Maglev, or magnetic levitation, is a system of transportation that suspends, guides and propels vehicles, predominantly trains, using magnetic levitation from a very large number of magnets for lift and propulsion. This method has the potential to be faster, quieter and smoother than wheeled mass transit systems. The power needed for levitation is usually not a particularly large percentage of the overall consumption, most of the power used is needed to overcome air drag, as with any other high speed train.

The highest recorded speed of a Maglev train is 581 kilometres per hour (361 mph), achieved in Japan in 2003, 6 kilometres per hour (3.7 mph) faster than the conventional TGV speed record. This is slower than many aircraft, since aircraft can fly at far higher altitudes where air drag is lower, thus high speeds are more readily attained. The technology has the potential to exceed 6,400 kilometres per hour (3,977 mph) if deployed in an evacuated tunnel.

The first commercial Maglev "people-mover" was officially opened in 1984 in Birmingham, England. It operated on an elevated 600-metre (2,000 ft) section of monorail track between Birmingham International Airport and Birmingham International railway station, running at speeds up to 42 km/h (26 mph); the system was eventually closed in 1995 due to reliability and design problems.

Germany and Japan are both developing maglev train technology, and both are currently testing prototypes of their trains (The German company "Transrapid International" also has a train in commercial use).
The Shanghai Maglev Train is the first commercial high-speed maglev line in the world. The system and trains were built to the Transrapid standard. Construction began in March 2001, and public service commenced on 1 January 2004.
During a test run on 12 November 2003, a maglev vehicle achieved a Chinese record speed of 501 km/h (311 mph).
The train set and tracks were manufactured using German technology.

The same line made its first open-to-the-public commercial run about a year later in December of 2003. The Shanghai Transrapid line currently runs to and from the Longyang Road station at the city's center and Pudong airport. Traveling at an average speed of 267 mph (430 kmh), the 19 mile (30 km) journey takes less than 10 minutes on the maglev train as opposed to an hour-long taxi ride. China is building an extension of the Shanghai line that will run 99 miles (160 km) to Hangzhou. Construction is scheduled to begin in fall 2006 and should be completed by the 2010 Shanghai Expo. This line will be the first Maglev rail line to run between two cities.

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