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Technology	evaluated	Overall Potential	-- show additional criterion -- Barriers Benefits (other than environmental) Energy efficiency (single vehicles) Status of development Technology field Vehicle - fix costs
Articulated trains (Jakob-type bogies)		promising
Aerodynamic ordering of freight cars		promising
Wheel-mounted permanent magnet synchronous motor		promising
Ventilation control (retrofit)		promising
Future developments in diesel technology		promising
Diesel-electric vehicles with energy storage		promising
Inverter unit for DC substations		promising
On-board energy storage in DC systems		promising
Stationary energy storage		promising
Fly-wheels (storage technology)		promising
Magnetic levitation technology (maglev)		promising
Coach insulation		promising

© UIC - International Union of Railways 2003