www.clean-fleets.eu 02.12.2014 I 1 Freiburger Verkehr AG – Retrofitting buses Clean Fleets case study ? Buses retrofitted to meet stricter emissions standards ? The entire fleet now meets a minimum Euro 5 standard. CO and NMHC emissions reduced by 92.5%, NOx by 81.5% and PM (particulates) by 78%. Summary of initiative In 2010 Freiburger Verkehrs AG (VAG

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