Search results
Results from the WOW.Com Content Network
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 ...
The United States has its own set of emissions standards that all new vehicles must meet. In the United States, emissions standards are managed by the Environmental Protection Agency (EPA). It uses tiers to identify emission standards for cars, trucks and other motor vehicles. [8]
The Clean Air Act of 1990 required some states to enact vehicle emissions inspection programs. States impacted were those in metropolitan areas where air quality did not meet federal standards. [1] Some states, including Kentucky and Minnesota, have discontinued their testing programs in recent years with approval from the federal government.
Pages in category "Emission standards" The following 23 pages are in this category, out of 23 total. ... United States vehicle emission standards; V. Vehicle ...
Seventeen states with vehicle emission standards tied to rules established in California face weighty decisions on whether to follow that state's strictest-in-the nation new rules that require all ...
AB 42 exempted vehicles manufactured before 1978 from smog check testing. Also required that vehicles 20 years old or older be exempt from the Smog Check program starting in 2004. AB 42 established a brief rolling chassis exemption until it was repealed in 2006 where 1976 and newer vehicles were subjected to emission testing.
In 2022, Ohio led a coalition of states in filing a petition to attempt to block California’s ability to enforce its own vehicle emissions standards, saying it violated the U.S. Constitution and ...
These are expected to be the toughest emissions standards yet, a move that should push the industry even more in the direction of EVs. EPA MPG Rules for 2027–32 Cars, Trucks, SUVs Getting (Way ...