Define: Automobile Emissions

Automobile emissions refer to the pollutants released into the atmosphere by vehicles, primarily from the combustion of fossil fuels. These emissions contribute to air pollution and have adverse effects on human health and the environment. To regulate and control automobile emissions, various legal measures have been implemented.

One of the key legal frameworks addressing automobile emissions is the Clean Air Act (CAA) in the United States. Under the CAA, the Environmental Protection Agency (EPA) is responsible for setting and enforcing emission standards for vehicles. The EPA has established two main sets of standards: one for criteria pollutants, such as carbon monoxide, nitrogen oxides, and particulate matter, and another for greenhouse gases, particularly carbon dioxide.

The CAA requires automobile manufacturers to meet these emission standards by implementing various technologies and techniques, such as catalytic converters, fuel injection systems, and advanced engine designs. Manufacturers must also conduct regular emissions testing to ensure compliance with the standards. Non-compliance can result in penalties and fines.

Additionally, the CAA encourages the development and use of alternative fuels and advanced vehicle technologies to reduce emissions. This includes promoting the production and sale of electric vehicles, hybrid vehicles, and vehicles powered by clean fuels like natural gas or hydrogen.

Internationally, automobile emissions are also regulated through agreements and standards set by organisations like the United Nations Economic Commission for Europe (UNECE) and the European Union (EU). These regulations aim to harmonize emission standards across countries and promote the use of cleaner technologies.

In summary, automobile emissions are regulated through legal frameworks like the Clean Air Act in the United States, which sets emission standards and requires manufacturers to comply through the use of technologies and regular testing. Internationally, organisations like UNECE and the EU also establish emission standards to reduce pollution and promote cleaner vehicle technologies.

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This glossary post was last updated: 29th March 2024.