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Putney Low Emission Bus Zone

Questions to the Mayor of London – answered on 1st November 2019.

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Photo of Leonie Cooper Leonie Cooper Labour

The Putney High Street Low Emission Bus Zone was launched by you in March 2017. Can you please set out how many breaches of the EU limits took place in 2017, 2018 and so far in 2019, as my constituents would like a full update.

Photo of Sadiq Khan Sadiq Khan Mayor of London

Since the introduction of the Putney High Street Low Emission Zone there have been significant improvements in concentrations of NO2 for both the hourly and annual mean.

In 2016, before improvements on the route began there were 403 exceedances of the hourly limit for NO2. In 2017, once the Low Emission Bus Zone was introduced this fell to nine. In 2018 there was insufficient data capture (less than 90 per cent) at the site due to technical issue which resulted in the site being offline for the majority of January and February. In 2019 to date (29 October) there has been good data capture and only 1 hour that exceeded the hourly limit.