By what percentage have London's bus emissions fallen since 2019?
Answer: 70%
London is home of the world’s largest clean air zone, which includes the Ultra Low Emission Zone (ULEZ).
Cumulatively since 2019, it’s estimated that nitrogen oxides (NOx) emissions from road traffic fell 13,500 tonnes across London, a 23% reduction compared to what emissions would’ve been without ULEZ.[1] Within the ULEZ itself, NOx emissions have been cut by 5,000 tonnes, a decrease of 26%.[2]
All types of vehicles contributed to this improvement, but buses led the way, with emissions from Transport for London’s (TfL) buses reduced by an impressive 70%.[3]
TfL’s zero-emission bus fleet is the largest in Western Europe, with more than 1,700 zero-emission buses now in service throughout London.[4] Electrifying London’s bus fleet is key to the Mayor’s aims of making London a
Net Zero
Establishing clean air zones, electrifying transportation and expanding public transportation access is key to achieving
UN Sustainable Development Goals (UN SDGs)
Matter of Facts are small insights into inspiring sustainable solutions.
[1] Mayor of London. (February 2023). Inner London Ultra Low Emission Zone Expansion One Year Report.
[2] Ibid.
[3] Ibid.
[4] Transport for London. (November 2024). High-speed charging technology powers safer new zero-emission buses on 358 route.
