Clean Diesel Technologies, Inc. Receives Expanded CARB Verification; Poised to Provide Emission Reduction Systems Under California's Truck and Bus Regulation

Clean Diesel Technologies CDTI is pleased to announce that the California Air Resources Board, or "CARB," has expanded their verification (approval) of the Company's ECS Purifilter® brand emission reduction product to now include larger control devices aimed at heavy duty on-road vehicle engines up to 16.0 liters and 625 horsepower. This verification further increases the wide variety of vehicle engines that Clean Diesel is approved to retrofit and provides an expanded opportunity for the Company's retrofit business under the current CARB Truck and Bus Regulation. Clean Diesel estimates that this Regulation will require well over 100,000 heavy duty diesel trucks to be replaced or retrofitted. The CARB Truck and Bus Regulation applies to a variety of diesel-fueled trucks and buses. The purpose of the Regulation is to reduce emissions from in-use trucks and buses in order to meet federally imposed clean air standards and to reduce the adverse health effects from truck and bus pollution. For heavier trucks and buses, the regulation mandates that all 1996 through 2006 diesel trucks in Class 7 (gross vehicle weight of 26,001-33,000 pounds) and Class 8 (gross vehicle weight greater than 33,000 pounds) be retrofitted with diesel particulate filters, if not so equipped, to meet state emission standards between 2012 and 2016, with 90% required by year end 2014.