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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.
Two sets, or tiers, of emission standards for light-duty vehicles in the United States were defined as a result of the Clean Air Act Amendments of 1990. The Tier I standard was adopted in 1991 and was phased in from 1994 to 1997. Tier II standards were phased in from 2004 to 2009. Within the Tier II ranking, there is a subranking ranging from ...
Michigan Proving Ground (MPG) – Romeo, Michigan. Latitude and longitude: 42°51′0″N 83°2′24″W / 42.85000°N 83.04000°W / 42.85000; -83.04000. The Ford Michigan Proving Ground (MPG) of Romeo, Michigan sits on 3,880 acres (15.7 km 2), and contains a total of over 100 miles (160 km) of roads. These grounds hold events like ...
The Arizona Proving Ground is a vehicle test facility established in 1955 in Yucca, Arizona. It was owned and operated by Ford Motor Company based in Dearborn, Michigan, until Chrysler LLC announced on November 2, 2007 that it had purchased the facility for $34.9 million. APG is located at the foot of the Hualapai Mountains near Yucca, Arizona ...
Testing will start in Phoenix and gradually expand to Scottsdale, Tempe, Mesa, Gilbert, Chandler and Paradise Valley, the company said. GM's Cruise to start testing robotaxis in Phoenix area with ...
The "10 - 15 Mode Hot Cycle" test, used to determine individual fuel economy ratings and emissions observed from the vehicle being tested, use a specific testing regime. [ 40 ] [ 41 ] [ 42 ]
What Ada County requires on emissions testing Emissions testing has been federally mandated in northern Ada County since the 1980s, when air quality in the region violated federal standards .
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 ...