Philadelphia’s Subway Trains Are Becoming Rolling Power Factories – Gizmodo
Posted in Septa on May 11th, 2012 by hattielvyaa – Be the first to commentPhiladelphia's Subway Trains Are Becoming Rolling Power Factories Gizmodo To combat its carbon footprint, the South East Pennsylvania Transit Authority ( SEPTA ) has outfitted its light-rail trains with regenerative braking technology. That's right: They'll power the system every time they slow down.

