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  2. European emission standards - Wikipedia

    en.wikipedia.org/wiki/European_emission_standards

    Petrol-powered vehicles are exempted from particulate matter (PM) standards through to the Euro 4 stage, but vehicles with direct injection engines are subject to a limit of 0.0045 g/km for Euro 5 and Euro 6. A particulate number standard (P) or (PN) has been introduced in 2011 with Euro 5b for diesel engines and, in 2014, with Euro 6 for ...

  3. Ultra Low Emission Zone - Wikipedia

    en.wikipedia.org/wiki/Ultra_Low_Emission_Zone

    The Ultra Low Emission Zone (ULEZ) is an area in London, England, where an emissions standard based charge is applied to non-compliant road vehicles. Plans were announced by London Mayor Boris Johnson in 2015 for the zone to come into operation in 2020.

  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.

  5. Drivers in Ulez-compliant cars may wrongly be charged ... - AOL

    www.aol.com/drivers-ulez-compliant-cars-may...

    As many as 100,000 petrol cars registered before 2005 could be Ulez compliant

  6. Camera attacks and conspiracy theories: How Ulez became a ...

    www.aol.com/camera-attacks-conspiracy-theories...

    London’s ultra-low-emission zone is set to expand on Tuesday despite a vocal backlash – Maanya Sachdeva and Holly Evans look at the criticisms of the controversial scheme

  7. One month after Ulez expanded, Uxbridge residents are ... - AOL

    www.aol.com/one-month-ulez-expanded-uxbridge...

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  8. Emission standard - Wikipedia

    en.wikipedia.org/wiki/Emission_standard

    All new vehicles manufactured after the implementation of the norms have to be compliant with the regulations. By 2014, the country was under a combination of Euro 3 and Euro 4-based norms, with Euro 4 standards partly implemented in 13 major cities. Till April 2017, the entire country was under BS IV norms, which is based on Euro 4. [36]

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