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  2. Vehicle inspection in the United States - Wikipedia

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

    Striped: Both safety and emissions testing required. In the United States, vehicle safety inspection and emissions inspection are governed by each state individually. Fifteen states have a periodic (annual or biennial) safety inspection program, while Maryland requires a safety inspection and Alabama requires a VIN inspection on sale or transfer of vehicles which were previously registered in ...

  3. United States vehicle emission standards - Wikipedia

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

    A representative dynamometer-based emissions test station. For model years prior to 1996, emissions tests were performed using a chassis dynamometer-based test; The vehicle is driven so that the wheels of its main driven axle (front or rear) sit atop the dynamometer rotors, when then are unlocked to rotate freely. A special collections line is ...

  4. Washington State Department of Ecology - Wikipedia

    en.wikipedia.org/wiki/Washington_State...

    The Department of Ecology began a vehicle inspection program in 1982, requiring vehicles registered within the state to be inspected for emissions quality. The program ended on December 31, 2019, following a 14-year phase-out approved by the state legislature in 2005 as air quality in Washington cities had improved to above federal standards.

  5. If you live in the Treasure Valley, your vehicle emissions ...

    www.aol.com/news/live-treasure-valley-vehicle...

    Programs in Ada and Canyon counties requiring emissions tests for vehicles are expected to go away this summer. If you live in the Treasure Valley, your vehicle emissions tests are going away. Why?

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

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

    The federal government has removed its testing requirement, ending a regular practice that has been in place for decades. Treasure Valley vehicle emissions tests are going away. But what if you ...

  7. Emission standard - Wikipedia

    en.wikipedia.org/wiki/Emission_standard

    Some states have areas within the state that require emissions testing while other cities within the state do not require emission testing. 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 ...

  8. Metro Council pushes vote on discontinuing vehicle emissions ...

    www.aol.com/news/metro-council-pushes-vote...

    Metro Council will vote on a resolution to discontinue mandatory vehicle emissions testing in Davidson County at its Jan. 4 meeting. Metro Council pushes vote on discontinuing vehicle emissions ...

  9. Vehicle emissions control - Wikipedia

    en.wikipedia.org/wiki/Vehicle_emissions_control

    Vehicle emissions control is the study of reducing the emissions produced by motor vehicles, especially internal combustion engines. The primary emissions studied include hydrocarbons, volatile organic compounds, carbon monoxide, carbon dioxide, nitrogen oxides, particulate matter, and sulfur oxides.

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