Maglevs are merely the logical progression of the electricity revolution that was begun by Edison and Tesla in the late 19th century, and were in fact conceived in the early 20th century. But, it was the rapid advancement in computer processing in the late 20th century that really propelled maglev development forward and transformed it into today’s premier transportation option. Today, maglevs are essentially ultra-reliable computer-controlled electronic transportation systems, with most maglevs requiring no moving mechanical parts for suspension, acceleration or braking.
Magnetic levitation is achieved in a variety of ways. What all these maglev systems share is the use of electro-magnetic power to suspend vehicles above and away from their guideways (tracks) rather than using wheels; although some systems use wheels for suspension at low speeds and while at rest. By suspending vehicles away from their guideways, the friction resulting from wheel on track contact is eliminated as an impediment to higher speeds. This same electro-magnetic power is also used to propel vehicles, which also means they are not polluting their rights of way. The regular use of mechanical friction brakes is also eliminated, along with the need for expensive brake maintenance.

All of these innovations result in much lower operational and maintenance expenditures, while also enabling significantly higher speeds and faster rates of acceleration and deceleration.

Maglev systems are cost effective, quiet and energy efficient and fit seamlessly into the vision of developing sustainable and livable pedestrian communities that enhance, rather than compromise, citizen mobility.

http://www.transrapid.de/real/mpeg/TR_Hochtech_16×9_en.mpg

http://www.transrapid.de/

http://www.rtri.or.jp/rd/maglev/html/english/maglev_frame_E.html