Portal:Trains/Selected article/Week 16, 2006

Magnetic levitation transport, or maglev, is a form of transportation that suspends, guides and propels vehicles via electromagnetic energy. This has advantages in terms of speed and ride comfort compared to wheeled mass transit systems - potentially, maglevs could reach velocities comparable to turboprop and jet aircraft (500 to 580 km/h; 310 to 360 mph) - but although the idea is decades old, technological and economic limitations have minimized the construction of full-scale systems. Maglev technology has minimal overlap with wheeled train technology and is not compatible with conventional railroad tracks. Because they cannot share existing infrastructure, maglevs must be designed as complete transportation systems. The term "maglev" refers not only to the vehicles, but to the vehicle/guideway interaction; each being a unique design element specifically tailored to the other to create and precisely control magnetic levitation. The world's first commercial application of a high-speed maglev line is the IOS (initial operating segment) demonstration line in Shanghai that transports people 30 km (18.6 miles) to the airport in just 7 minutes 20 seconds (top speed of 431 km/h or 268 mph, average speed 250 km/h or 150 mph). Other maglev applications worldwide are being investigated for feasibility.

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