More information: Zixuan Cheng et al, Quantifying black carbon emissions from traffic and construction in central London using eddy covariance, Environmental Science: Atmospheres (2025).

We've achieved it this year. A major reason for this progress is the introduction of the world’s largest clean air zone: the Ultra Low Emission Zone (ULEZ).

London Mayor Sadiq Khan has praised the rapid expansion of the capital's zero emission bus network, calling it an "epic milestone". There are now more than 2,000 zero emission buses in London ...

It can work on greener transports. London, for example, set up the Ultra Low Emission Zone to encourage the usage of public transport and cleaner vehicles. And a city can upgrade industries and ...

Ultra-low emission vehicles emitting under 75g/km CO2 will pay £2 to use the streets, while low emission models that meet Euro 4 standards will be charged £4. However, all other vehicles ...

Scotland’s first low emission zone (LEZ) has led to some pollution being cut by as much as one third on one street, a new study into the impact of the measure has shown.

Google Maps now includes walking, public transit, and long-distance rail options across Europe to support more sustainable travel choices and reduce emissions.