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Vehicle emissions inspection station in Wisconsin. Arizona – biennially, in Phoenix and Tucson metro areas only, depending on age and type of vehicle. [28]California – biennially for all vehicles from out-of-state, regardless of age; and all vehicles made after 1975 which are more than six years old in all or some zip codes in 41 out of 58 counties.
State Emissions Name Light duty gasoline Emissions testing Light-duty diesel Emissions testing Heavy-duty diesel Emissions testing Special notes Alabama [52] No emissions testing required No emissions testing required Alabama maintains "volunteer emission testing" Alaska [53] ≥6 model years old (Anchorage) Biennially Exempt Exempt Arizona [54 ...
A check engine light or malfunction indicator lamp (MIL), is a tell-tale that a computerized engine-management system uses to indicate a malfunction or problem with the vehicle ranging from minor (such as a loose gas cap) to serious (worn spark plugs, engine problems or a faulty oil valve, etc.).
Engine manufacturer Cummins Inc. has agreed to pay a $1.675 billion penalty for allegedly installing "defeat devices" on approximately 1 million pickup trucks to cheat emissions tests.
WASHINGTON (Reuters) -U.S. environmental regulators are expected to base new rules for controlling methane emissions from oil and gas operations on the nation-leading policies of a state that has ...
The EU Directive 2014/45 of April 3, 2014 mandates all member states to carry out periodic safety and emission (roadworthiness) inspections for most types of motor vehicles including passenger cars, light and heavy goods vehicles, trailers, tractors with designed speed exceeding 40 km/h and, from 1 January 2022, motorcycles with engine ...
The emissions testing program in Canyon County and Kuna began in 2010 because of an Idaho law that required vehicle emissions tests in airsheds where an ambient air pollutant is at or above 85% of ...
1998: Diesel engine standards further increased in efforts to reduce ozone and PM emissions for various vehicles including industrial equipment. 1999: Tailpipe emission standards are finalized, sulfur contents in gasoline are reduced, and various boats/other marine vehicles using diesel had reduced emission limits for NOx and PM. [7]