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FINAL MOBILE6 EMISSIONS MODEL IS MADE AVAILABLE TO THE PUBLIC
Release Date: 01/25/2002
Contact Information:
FOR RELEASE: FRIDAY, JANUARY 25, 2002
FINAL MOBILE6 EMISSIONS MODEL IS MADE AVAILABLE TO THE PUBLIC
Cathy Milbourn 202-564-7824/milbourn.cathy@epa.gov
Cathy Milbourn 202-564-7824/milbourn.cathy@epa.gov
EPA is making available the final version of MOBILE6, which will become EPA’s official highway vehicle emission factor model for hydrocarbons, carbon monoxide and oxides of nitrogen. The new MOBILE6 model includes the most up-to-date science, information and tools available to predict emissions from cars and light duty trucks. The new model also provides more flexibility to states to generate accurate information that can be used in creating their state air quality plans and assessments of transportation activities. Because the results of MOBILE6 are expected to be more accurate than current modeling efforts, it will allow states to plan and implement control measures in a more cost effective manner, ensuring improved air quality benefits. This new model is the first major revision to MOBILE since MOBILE5a was released in 1993. EPA is required by the Clean Air Act to periodically update its motor vehicle emissions model. It took five years to develop the MOBILE6 model which is based on actual emissions testing of tens of thousands of vehicles. The model was extensively peer reviewed by scientific and technical experts, including the National Academy of Sciences, academics and industry. MOBILE6 includes several changes from the MOBILE5 version. For the first time, the new model includes: improved emissions effects of air conditioning and high acceleration driving; explicit gasoline sulfur effects; improved durability of vehicles and a revised ratio of cars to SUVs, minivans and pick-up trucks in the fleet to better reflect the growth in sales of light-duty trucks on the road. An official notice of the release of MOBILE6 will be published in the Federal Register soon. The MOBILE6 model, user guide and support documents are available at: www.epa.gov/otaq/m6.htm .
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