Editing Vehicle emissions control (section)

==Regulatory agencies==
The agencies charged with implementing exhaust [[emission standard]]s vary from jurisdiction to jurisdiction, even in the same country. For example, in the United States, overall responsibility belongs to the EPA, but due to special requirements of the State of California, emissions in California are regulated by the [[California Air Resources Board|Air Resources Board]]. In Texas, the [[Texas Railroad Commission]] is responsible for regulating emissions from [[Liquefied petroleum gas|LPG]]-fueled rich burn engines (but not gasoline-fueled rich burn engines).

===North America===
* [[California Air Resources Board]] – California, United States (most sources)
* [[Environment Canada]] – Canada (most sources)
* [[United States Environmental Protection Agency|Environmental Protection Agency]] – United States (most sources)
* [[Texas Railroad Commission]] – Texas, United States (LPG-fueled engines only)
* [[Transport Canada]] – Canada (trains and ships)

===Japan===
* [[Ministry of Land, Infrastructure, Transport and Tourism]] / Road Transport Bureau / Environmental Policy Division<ref>{{cite web| date=November 2019 |author=Hiroshi Morimoto |title=Overview of MLIT's Vehicle Environmental Policy |url=https://theicct.org/sites/default/files/Overview%20of%20MLIT%20Vehicle%20Environmental%20Policy.pdf |website=[[International Council on Clean Transportation]] |access-date=4 December 2021 }}</ref>

===Europe===
The [[European Union]] has control over regulation of emissions in EU member states; however, many member states have their own government bodies to enforce and implement these regulations in their respective countries. In short, the EU forms the policy (by setting limits such as the [[European emission standard]]) and the member states decide how to best implement it in their own country.

====United Kingdom====
In the United Kingdom, matters concerning environmental policy are "devolved powers" so that some of the constituent countries deal with it separately through their own government bodies set up to deal with environmental issues:
* [[Environment Agency]] – England and Wales
* [[Scottish Environment Protection Agency]] (SEPA) – Scotland
* [[Department of the Environment (Northern Ireland)|Department of the Environment]] – Northern Ireland

However, many UK-wide policies are handled by the [[Department for Environment, Food and Rural Affairs]] (DEFRA) and they are still subject to EU regulations.

Emissions tests on [[Diesel fuel|diesel]] cars have not been carried out during [[MOT test|MOTs]] in Northern Ireland for 12 years, despite being legally required.<ref>{{cite news|url=https://www.bbc.co.uk/news/uk-northern-ireland-45643031|title=MOT diesel test not performed in NI for 12 years|work=[[BBC Northern Ireland]] News|date=26 September 2018|access-date=26 September 2018|archive-date=25 September 2018|archive-url=https://web.archive.org/web/20180925205951/https://www.bbc.co.uk/news/uk-northern-ireland-45643031|url-status=live}}</ref>

=== China ===
* [[Ministry of Ecology and Environment]] – Primary regulatory authority responsible for environmental protection, formulates policies, standards, and regulations which encompass vehicle emissions, and environmental impact assessments.<ref>{{Cite web |title=中华人民共和国生态环境部 |url=https://www.mee.gov.cn/ |access-date=2023-06-02 |website=www.mee.gov.cn}}</ref>
* [[Ministry of Industry and Information Technology]] – Creates and establishes goals for new energy vehicles (NEV), and commercial vehicles. Also plays a role in creating national emissions standards for cars.<ref>{{Cite web |last=严茂强 |title=Stricter emission standard to kick in |url=https://www.chinadaily.com.cn/a/202305/10/WS645af964a310b6054fad21c1.html |access-date=2023-06-02 |website=www.chinadaily.com.cn}}</ref>
* [[State Administration for Market Regulation]]  – Responsible for market supervision and standardization in China. The State Administration for Market Regulation oversees the enforcement of vehicle emissions standards and ensures compliance by conducting inspections, testing, and quality control measures.<ref>{{Cite web |title=国家市场监督管理总局 |url=https://www.samr.gov.cn/ |access-date=2023-06-02 |website=www.samr.gov.cn}}</ref>
* [[National Development and Reform Commission]] - Responsible for macroeconomic planning and formulating energy-related policies in China. The National Development and Reform Commission plays a role on fuel efficiency standards, promoting alternative fuels, and implementing energy-saving measures to reduce emissions from vehicles.<ref>{{Cite web |title=National Development and Reform Commission (NDRC) People's Republic of China |url=https://en.ndrc.gov.cn/ |access-date=2023-06-02 |website=en.ndrc.gov.cn}}</ref>
* China Automotive Technology & Research Center - An independent research institution commissioned by the Ministry of Industry and Information Technology, to research, develop and draft the standards for fuel consumption limits of motor vehicles.<ref name=":0">{{Cite web |title=China: Heavy-duty: Fuel Consumption {{!}} Transport Policy |url=https://www.transportpolicy.net/standard/china-heavy-duty-fuel-consumption/ |access-date=2023-06-02 |website=www.transportpolicy.net}}</ref>
* [[Ministry of Transport of the People's Republic of China]]  - While it is unclear whether this ministry has legal authority on whether they can enforce these standards, the Ministry of Transport will not issue commercial licenses to any heavy-duty vehicles that don't meet fuel consumption requirements they have set.<ref name=":0" />
* Provincial and Municipal Environmental Protection Bureaus - At the provincial and municipal level these Bureaus are responsible for enforcing regulations such as those related to vehicle emissions. These bureaus monitor compliance, conduct inspections, and impose penalties for non-compliance.