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  2. Vehicle inspection in the United States - Wikipedia

    en.wikipedia.org/wiki/Vehicle_inspection_in_the...

    Vehicle emissions inspection station in Wisconsin. Arizona – biennially, in Phoenix and Tucson metro areas only, depending on age and type of vehicle. [28]California – biennially for all vehicles from out-of-state, regardless of age; and all vehicles made after 1975 which are more than six years old in all or some zip codes in 41 out of 58 counties.

  3. United States vehicle emission standards - Wikipedia

    en.wikipedia.org/wiki/United_States_vehicle...

    Two sets, or tiers, of emission standards for light-duty vehicles in the United States were defined as a result of the Clean Air Act Amendments of 1990. The Tier I standard was adopted in 1991 and was phased in from 1994 to 1997. Tier II standards were phased in from 2004 to 2009. Within the Tier II ranking, there is a subranking ranging from ...

  4. Emission standard - Wikipedia

    en.wikipedia.org/wiki/Emission_standard

    Arizona emissions testing locations are located primarily in the two largest metropolitan areas (Phoenix and Tucson). People outside of these areas are not required to submit their vehicle for testing as these areas are the only ones that have failed the air quality tests by the state.

  5. Worldwide Harmonised Light Vehicles Test Procedure

    en.wikipedia.org/wiki/Worldwide_Harmonised_Light...

    WLTP (2015) (Addenda 15) v. t. e. The Worldwide harmonized Light vehicles Test Procedure (WLTP) [1] is a global driving cycle standard for determining the levels of pollutants, CO 2 emission standards and fuel consumption of conventional internal combustion engine (ICE) and hybrid automobiles, as well as the all-electric range of plug-in ...

  6. Chicago should set limits on buildings’ greenhouse gas ...

    www.aol.com/chicago-set-limits-buildings...

    The city should set limits on emissions from certain buildings, using an approach already in place in New York, according to the report from the Urban Land Institute Chicago. The emission limits ...

  7. Treasure Valley vehicle emissions tests are going away. But ...

    www.aol.com/treasure-valley-vehicle-emissions...

    What happens to emissions testing businesses The emissions tests are conducted by private businesses, of which there are close to 40 listed on the Air Quality Board’s website .

  8. Not-To-Exceed - Wikipedia

    en.wikipedia.org/wiki/Not-To-Exceed

    Basically, the HDIUT is an industry agreed to manufacturer run, in-use, on-road testing program. It builds upon the original NTE standard. It is designed to focus on compliance in the real world, and relies on emissions testing, utilizing Portable Emissions Measurement Systems (PEMS) with NOx, HC, CO and PM being the pollutants to be measured. [11]

  9. Idaho wants to end vehicle emissions testing. How will that ...

    www.aol.com/news/idaho-wants-end-vehicle...

    The emissions testing program in Canyon County and Kuna began in 2010 because of an Idaho law that required vehicle emissions tests in airsheds where an ambient air pollutant is at or above 85% of ...