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In the first 10 months of the central London Ulez, road transport nitrogen oxides (NOx) emissions fell by 35 per cent in the zone, and CO2 emissions by six per cent.
The Ultra Low Emission Zone (ULEZ) is an area in London, England, where an emissions standard based charge is applied to non-compliant road vehicles. Plans were announced by London Mayor Boris Johnson in 2015 for the zone to come into operation in 2020. Sadiq Khan, the subsequent mayor, introduced the zone early in 2019.
Since 1993, the London Air Quality Network of Imperial College London has coordinated the monitoring of air pollution across 30 London boroughs and Heathrow, and has noted that in 2005–2006 almost all road and kerbside monitoring sites across greater London exceeded the annual average limits for nitrogen dioxide of 40 μgm (21 ppb), with eleven sites exceeding the hourly limits of 200 μgm ...
The bus was designed to be 40% more fuel-efficient than conventional diesel buses, and 15% more than London hybrid buses already in operation, reducing nitrogen oxide emissions by 40% and particulate matter by 33% compared with diesel buses. [40] The first eight vehicles entered service with Arriva London on route 38 in February 2012. [41]
A local authority report on the zone's impact said the city had some of the highest levels of nitrogen dioxide (NO2) outside of London, with poor air quality responsible for about 900 premature ...
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The word was then intended to refer to what was sometimes known as pea soup fog, a familiar and serious problem in London from the 19th century to the mid-20th century, where it was commonly known as a London particular or London fog. This kind of visible air pollution is composed of nitrogen oxides, sulfur oxide, ozone, smoke and other ...
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