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  2. Vehicle inspection in the United States - Wikipedia

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

    Until December 31, 2010, vehicles registered in the five boroughs of New York City, as well as on Long Island, in Westchester County or in Rockland County required a tailpipe smog-test if they are not OBD II equipped (they now receive a visual only check of emissions control devices). All OBD II vehicles in those areas (1996 model year or newer ...

  3. Transportation Research Center - Wikipedia

    en.wikipedia.org/wiki/Transportation_Research_Center

    The Transportation Research Center (TRC) is North America's largest multi-user automotive proving ground. It is operated by TRC Inc. The center occupies 4,500 acres in East Liberty, Ohio, about 40 miles northwest of Columbus, Ohio.

  4. United States vehicle emission standards - Wikipedia

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

    The Clean Air Act of 1963 (CAA) was passed as an extension of the Air Pollution Control Act of 1955, encouraging the federal government via the United States Public Health Service under the then-Department of Health, Education, and Welfare (HEW) to encourage research and development towards reducing pollution and working with states to establish their own emission reduction programs.

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  6. Emission standard - Wikipedia

    en.wikipedia.org/wiki/Emission_standard

    The first automobile emissions standards were enacted in 1963 in the United States, mainly as a response to Los Angeles' smog problems. Three years later Japan enacted their first emissions rules, followed between 1970 and 1972 by Canada, Australia, and several European nations. [ 1 ]

  7. Vehicle emissions control - Wikipedia

    en.wikipedia.org/wiki/Vehicle_emissions_control

    NO x is a precursor to smog and acid rain. NO x includes NO and NO 2. [1] NO 2 is extremely reactive. NO x production is increased when an engine runs at its most efficient (i.e. hottest) operating point, so there tends to be a natural tradeoff between efficiency and control of NO x emissions. It is expected to be reduced drastically by use of ...

  8. List of U.S. states and territories by carbon dioxide emissions

    en.wikipedia.org/wiki/List_of_U.S._states_and...

    Carbon emissions per capita, 2020 Carbon emissions per 1000 square miles, 2020. This is a list of U.S. states and territories by carbon dioxide emissions for energy use, [1] [2] as well as per capita [3] [4] and by area.

  9. California Smog Check Program - Wikipedia

    en.wikipedia.org/wiki/California_Smog_Check_Program

    A smog check inspection is performed by a station that has been licensed by the California Bureau of Automotive Repair (BAR). Depending on the situation, the owner may be required to take the vehicle to one of the following types of smog check stations: Test-only station, one that can perform the smog check test, but cannot make repairs.

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