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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
Magnetic levitation technology (maglev)		promising
Swissmetro		interesting
Coach insulation		promising
Modification of target temperature in passenger coaches		very promising
Smart windows		interesting
Improved operation control for air-conditioning		interesting
ORC technology to use waste heat in MUs		interesting
Heat exchangers to use waste heat in MUs		promising
CO2-based demand control for coach ventilation		very promising
Excess ventilation		promising
Control of comfort functions in parked trains		very promising
Coupling of parked trains for common energy supply		interesting

© UIC - International Union of Railways 2003