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  2. United States vehicle emission standards - Wikipedia

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

    In the United States, the emission standards for non-road diesel engines are published in the US Code of Federal Regulations, Title 40, Part 89 (40 CFR Part 89). Tier 1–3 Standards were adopted in 1994 and was phased in between 1996 and 2000 for engines over 37 kW (50 hp). In 1998 the regulation included engines under 37 kW and introduced ...

  3. North Carolina Safety and Emission Vehicle Inspection

    en.wikipedia.org/wiki/North_Carolina_Safety_and...

    As of April 1, 2015 North Carolina General Statute 20-183.2 exempts certain vehicles within the most recent three model years, and having fewer than 70,000 miles on the odometer, from emissions inspection. [3] The NC Department of Environmental Quality provides a calculator to help determine if a particular vehicle may be exempt.

  4. North Carolina moves to end vehicle emissions testing in ...

    www.aol.com/north-carolina-moves-end-vehicle...

    The N.C. Division of Air Quality will ask the U.S. EPA to approve a plan to end annual emissions inspections in 18 of the 19 counties where it is still required.

  5. Vehicle inspection in the United States - Wikipedia

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

    Diesel trucks over 8500 lbs. GVWR are required to have a diesel emissions inspection if they are registered in the NYC metropolitan area. North Carolina – annually, required for vehicles in 19 (out of 100) counties, for vehicles newer than 20 years old. Effective November 1, 2008, no inspection decal is issued upon passing.

  6. How and why states are committing to electric vehicles - AOL

    www.aol.com/why-states-committing-electric...

    California. Government goals, policies, and requirements: - By 2030, aims to have 5 million zero-emission vehicles on the road - By 2025, aims to have 200 hydrogen fueling stations and 250,000 EV ...

  7. Emission standard - Wikipedia

    en.wikipedia.org/wiki/Emission_standard

    Emission standards are the legal requirements governing air pollutants released into the atmosphere. Emission standards set quantitative limits on the permissible amount of specific air pollutants that may be released from specific sources over specific timeframes. They are generally designed to achieve air quality standards and to protect ...

  8. Not-To-Exceed - Wikipedia

    en.wikipedia.org/wiki/Not-To-Exceed

    The NTE cap is set at 1.25 times the FTP emission limit as described in the subsection above. For 2005 model year heavy-duty engines, the NTE emission cap for NMHC plus NOx is 1.25 times 2.5 grams per brake horsepower-hour, or 3.125 grams per brake horsepower-hour. The basic NTE control area for diesel engines has three basic boundaries on the ...

  9. EMD SD70 series - Wikipedia

    en.wikipedia.org/wiki/EMD_SD70_series

    On January 1, 2015, the United States Environmental Protection Agency's Tier 4 locomotive emission regulations went into effect. EMD could not successfully modify the SD70ACe's 2-stroke 710 series prime mover to be Tier 4-compliant; thus, the Tier 3 SD70ACe was succeeded by the SD70ACe-T4 in late 2015. However, US production of the Tier 3 ...