Annual emissions of NOx in the UK have fallen considerably in recent decades due to stricter regulations and the introduction of catalytic converters which reduce toxic gases from vehicle exhausts.
Emissions of nitrogen oxides (NOx) in the United Kingdom totaled 643,300 metric tons in 2022. Road transportation was the largest source of nitrogen oxides, accounting for more than 30 percent of total emissions that year, while non-road transportation contributed an additional 15 percent. Distribution of nitrogen oxides (NOx) emissions in the United Kingdom (UK) in 2022, by source
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Defra. (February 14, 2024). Distribution of nitrogen oxides (NOx) emissions in the United Kingdom (UK) in 2022, by source [Graph]. In Statista. Retrieved March 28, 2024, from https://www.statista.com/statistics/1206492/nitrogen-oxides-emissions-by-source-united-kingdom-uk/
Defra. "Distribution of nitrogen oxides (NOx) emissions in the United Kingdom (UK) in 2022, by source." Chart. February 14, 2024. Statista. Accessed March 28, 2024. https://www.statista.com/statistics/1206492/nitrogen-oxides-emissions-by-source-united-kingdom-uk/
Defra. (2024). Distribution of nitrogen oxides (NOx) emissions in the United Kingdom (UK) in 2022, by source. Statista. Statista Inc.. Accessed: March 28, 2024. https://www.statista.com/statistics/1206492/nitrogen-oxides-emissions-by-source-united-kingdom-uk/
Defra. "Distribution of Nitrogen Oxides (Nox) Emissions in The United Kingdom (Uk) in 2022, by Source." Statista, Statista Inc., 14 Feb 2024, https://www.statista.com/statistics/1206492/nitrogen-oxides-emissions-by-source-united-kingdom-uk/
Defra, Distribution of nitrogen oxides (NOx) emissions in the United Kingdom (UK) in 2022, by source Statista, https://www.statista.com/statistics/1206492/nitrogen-oxides-emissions-by-source-united-kingdom-uk/ (last visited March 28, 2024)
Distribution of nitrogen oxides (NOx) emissions in the United Kingdom (UK) in 2022, by source [Graph], Defra, February 14, 2024. [Online]. Available: https://www.statista.com/statistics/1206492/nitrogen-oxides-emissions-by-source-united-kingdom-uk/