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United States vehicle emission standards are set through a combination of legislative mandates enacted by Congress through Clean Air Act (CAA) amendments from 1970 onwards, and executive regulations managed nationally by the Environmental Protection Agency (EPA), and more recently along with the National Highway Traffic Safety Administration (NHTSA).
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 EPA Federal Test Procedure, commonly known as FTP-75 for the city driving cycle, are a series of tests defined by the US Environmental Protection Agency (EPA) to measure tailpipe emissions and fuel economy of passenger cars (excluding light trucks and heavy-duty vehicles).
The Worldwide Harmonised Light vehicles Test Procedure (WLTP) [1] is a global driving cycle standard for determining the levels of pollutants, CO 2 emission standards and fuel consumption of conventional internal combustion engine (ICE) and hybrid automobiles, as well as the all-electric range of plug-in electric vehicles.
The pump's air intake is filtered by a rotating screen or the vehicle air filter to exclude dirt particles large enough to damage the system. Air is delivered under light pressure to the injection point(s). A check valve prevents exhaust forcing its way back through the air injection system, which would damage the pump and other components.
Oct. 13—West Virginia has joined a 20-state coalition challenging a Biden administration rule requiring the states to reduce on-road carbon dioxide emissions to net-zero by 2050. Republican ...
Here is a look at the hurdles and legal challenges Trump could face if he follows through on the panel's recommendations. Elon Musk and Vivek Ramaswamy, who were tapped by Republican President ...
The Fairfax County Parkway Trail is a multi-use trail that runs alongside the Franconia–Springfield Parkway and Fairfax County Parkway from Beulah Street in Springfield to SR 7, [10] mostly as a sidepath, but sometimes using adjacent frontage roads and old alignments of the roads that the parkway replaced.