Air pollution: limitations of EPA's motor vehicle emissions model and plans to address them : report to the Chairman, Subcommittee on Oversight and Investigations, Committee on Commerce, House of Representatives
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according to agency accumulated mileage Additionally agency officials air conditioner air quality American Petroleum Institute areas assumptions average vehicle carbon monoxide Clean Air Act correction factors current mobile model current model develop diurnal emissions driving cycle dynamometer emissions control system emissions estimates emissions impact emissions model emissions rates emissions-producing activities Environmental epa officials pointed EPA plans epa's mobile model evaporative emissions fuel leaks fuel-injected vehicles GM Powertrain heavy duty vehicles high emitters hydrocarbons i&m program impact of road improvement indicates issue light duty counterparts light duty vehicles Limitations in MOBILE5a Major Limitations mobile model workgroup Mobile Sources MOBILE6 model experts model users model's estimates National Research Council nitrogen oxides odometer miles Office of Mobile oms officials on-board on-board diagnostics On-Road Vehicle Emissions ongoing oxygenated fuels peer review percent revise road grade roadway classifications significant stakeholders tampering temperatures Vehicle Emissions Workshop