On track to a more sustainable railway: yellow machines go greenA Railway Gazette Group White PaperINNOVATION FOR YOUIntroduced in 2015, the E³ machines by Plasser & Theurer stand for: Economic – Ecologic – ErgonomicFit for the future of the railwayThe latest track maintenance machines use both the electrical energy from the contact wire and batteries to power the working driveNoise measurementE³ reduces noise and takes ergonomic design to the next levelAdded valueThe E³ drive technology enables machines to be operated free of any exhaust emissionsSustainability and environmental protectionAlready today, track maintenance machines with E³ technology contribute to meeting the climate targets of the railways