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Emissions from all non-road engines are regulated by categories. [49] 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 ...
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.
The ("Emissions Control Systems Project Center") (had) seven tasks to perform, such that an emission system, which passes all existing Federal Emission and Fuel Economy legislation is put into production. These are to work with the car divisions to: Define hardware and system requirements.
On January 16, 2006, SB 1179 was introduced that would reaffirm the HOV benefit, pending federal clearance. [citation needed] In California, hybrids with an EPA estimate of 45 mpg ‑US (5.2 L/100 km; 54 mpg ‑imp) or higher meet the requirements to drive in California's carpool lanes with only one passenger. [citation needed]
Under the Clean Air Act, states must abide by the federal government's standard vehicle emissions standards unless they at least partially opt to follow California's stricter requirements.
Super ultra-low emissions vehicle (SULEV) is a U.S. classification for passenger vehicle emissions. The classification is based on producing 90% fewer emissions than the average gasoline-powered vehicle. [ 1 ]
A partial zero-emission vehicle, in the United States, is an automobile that has zero evaporative emissions from its fuel system, has a 15-year (or at least 150,000-mile) warranty on its emission-control components, and meets SULEV tailpipe-emission standards.
The Federal Motor Vehicle Safety Standards (FMVSS) are U.S. federal vehicle regulations specifying design, construction, performance, and durability requirements for motor vehicles and regulated automobile safety-related components, systems, and design features.