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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. Everything you need to know about Ulez as controversial ... - AOL

    www.aol.com/everything-know-ulez-controversial...

    Under the scheme, cars and vans that don't meet certain emissions standards (Euro 4 for petrol and Euro 6 for diesel) have to pay a £12.50 charge to drive into the Ulez zone. TfL says this means ...

  4. 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.

  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. Ultra-low-emission vehicle - Wikipedia

    en.wikipedia.org/wiki/Ultra-low-emission_vehicle

    An ultra-low-emission vehicle (ULEV) is a motor vehicle that emits extremely low levels of motor vehicle emissions compared to other vehicles. In some jurisdictions it is defined in law; low and ultra low emission vehicles may be given tax or other advantages, [1] while high emission vehicles may suffer restrictions or additional taxation.

  7. ULEZ: What is it and why was it created? - AOL

    www.aol.com/ulez-why-created-130908985.html

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  8. Low-emission zone - Wikipedia

    en.wikipedia.org/wiki/Low-emission_zone

    A ultra-low-emission zone (ULEZ) is a zone with a stricter emissions requirement than LEZ. A zero-emission zone ( ZEZ ) is a LEZ where only zero-emissions vehicles (ZEVs) are allowed. In such areas, all internal combustion engine vehicles are banned; this includes any plug-in hybrid vehicles which cannot run zero-emission. [ 1 ]

  9. 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.