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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...

    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.

  4. FTP-75 - Wikipedia

    en.wikipedia.org/wiki/FTP-75

    The EPA Federal Test Procedure, commonly known as FTP-75 for the city driving cycle, are a series of tests defined by the US Environmental Protection Agency (EPA) to measure tailpipe emissions and fuel economy of passenger cars (excluding light trucks and heavy-duty vehicles).

  5. Milwaukee just opened self-service kiosks for vehicle ... - AOL

    www.aol.com/milwaukee-just-opened-self-kiosks...

    Here's what to know about vehicle emission testing requirements in Milwaukee and how to use the new self service kiosks. Traffic travels along on I-94 west of downtown near 35th Street in ...

  6. 1939 St. Louis smog - Wikipedia

    en.wikipedia.org/wiki/1939_St._Louis_smog

    The 1939 St. Louis smog was a severe smog episode that affected St. Louis, Missouri on November 28, 1939. Visibility was so limited that streetlights remained lit throughout the day and motorists needed their headlights to navigate city streets.

  7. UDDS - Wikipedia

    en.wikipedia.org/wiki/UDDS

    UDDS stands for Urban Dynamometer Driving Schedule, [1] and refers to a United States Environmental Protection Agency mandated dynamometer test on fuel economy that represents city driving conditions which is used for light duty vehicle testing.

  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]

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