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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. Vehicle emissions control - Wikipedia

    en.wikipedia.org/wiki/Vehicle_emissions_control

    The agencies charged with implementing exhaust emission standards vary from jurisdiction to jurisdiction, even in the same country. For example, in the United States, overall responsibility belongs to the EPA, but due to special requirements of the State of California, emissions in California are regulated by the Air Resources Board.

  4. Emission standard - Wikipedia

    en.wikipedia.org/wiki/Emission_standard

    The first automobile emissions standards were enacted in 1963 in the United States, mainly as a response to Los Angeles' smog problems. Three years later Japan enacted their first emissions rules, followed between 1970 and 1972 by Canada, Australia, and several European nations. [ 1 ]

  5. As electric vehicle sales slow, US relaxes plans for stricter ...

    www.aol.com/news/epa-expected-relax-auto...

    The Biden administration this week is expected to announce new automobile emissions standards that relax proposed tailpipe limits for three years but eventually reach the same strict standards set ...

  6. Timeline of major U.S. environmental and occupational health ...

    en.wikipedia.org/wiki/Timeline_of_major_U.S...

    Major rewrite of CAA, setting National Ambient Air Quality Standards (NAAQS), New Source Performance Standards (NSPS) Hazardous Air Pollutant standards, and auto emissions tailpipe standards. 1970 – Williams-Steiger Occupational Safety and Health Act (created OSHA and NIOSH) 1970 – Lead-Based Paint Poisoning Prevention Act

  7. EPA sets strict emissions standards for heavy-duty ... - AOL

    www.aol.com/news/epa-sets-strict-emissions...

    The new rules for heavy trucks and buses come a week after the EPA announced new automobile emissions standards for passenger vehicles. Those rules relax initial tailpipe limits proposed last year ...

  8. 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 ...

  9. Exhaust gas - Wikipedia

    en.wikipedia.org/wiki/Exhaust_gas

    European emission standards limit the CO 2 emissions of new passenger cars and light vehicles. The European Union average new car CO 2 emissions figure dropped by 5.4% in the year to the first quarter of 2010, down to 145.6 g/km. [36]