Non-road engine

[4] The rationale for establishing emission standards for non-road engines is that they are a significant source of pollution.

The non-road engines also emit air pollution particles at much higher rates.

The main model regulations that are used by many countries are the United States Environmental Protection Agency through the section 213 of the Clean Air Act (42 U.S.C.

[7] In the European Union, in 2023, the Commission and the Council proposed to harmonize road safety requirements to ease non-road mobile machinery (such as lawn mowers, harvesters or bulldozers) to circulate on public roads and replace local European union member states regulations.

Japan introduced its own standards that are similar but not harmonized to the US Tier 3 and Europe Stage III A. Brazil adopted the resolution in 2011 to set emission standards that are equivalent to US Tier 3 and European Stage III A.