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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
Diesel-mechanic transmission		promising
Regenerative braking in DC systems		very promising
Regenerative braking in 50 Hz, 25 kV systems		very promising
Lubrication of wheels and tracks		interesting
Diesel flow meters		interesting
Passenger information to reduce boarding time at stations		promising
Hybrid locomotives
SOTRELE:Real Time Power and Energy Optimisation System
Kinetic Energy Storage System (KESS)
Automatic Train Control 2
Fuel Stabilizer
Space Utilization

© UIC - International Union of Railways 2003