Request ID: FOI-2325-2223 Date published: 05 January 2023
You asked
With the Ulez targeting pollution only from vehicle exhausts, can you provide a breakdown of PM2.5 pollution by source, as a percentage of total pollution.
Can you provide a summary of how much the pollution reduction will be from Ulez when compared to all sources of PM2.5 pollution and provide an overall envisaged percentage reduction by year, going forward so we can compare the effectiveness of the policy over time as PM2.5 pollution is attributable to other sources which are not subject to any policies to limit or improve them, for instance vehicle brake dust.
We answered
TfL Ref: FOI-2325-2223
Thank you for your request received by Transport for London (TfL) on 13 December 2022, asking for information about PM2.5 pollution.
Your request has been considered in accordance with the requirements of the Environmental Information Regulations and our information access policy. I can confirm that we hold the information you require. You asked:
With the Ulez targeting pollution only from vehicle exhausts, can you provide a breakdown of PM2.5 pollution by source, as a percentage of total pollution.
Can you provide a summary of how much the pollution reduction will be from Ulez when compared to all sources of PM2.5 pollution and provide an overall envisaged percentage reduction by year, going forward so we can compare the effectiveness of the policy over time as PM2.5 pollution is attributable to other sources which are not subject to any policies to limit or improve them, for instance vehicle brake dust.
Information on PM2.5 pollution and emissions is available on the TfL website at https://tfl.gov.uk/corporate/publications-and-reports/ultra-low-emission-zone#on-this-page-1. There you can find ULEZ monitoring reports which look at the impacts on the ULEZ in Central London from 2019 and then the expansion from October 2021. A one year on ULEZ monitoring report will also be prepared next year.
If this is not the information you are looking for, or if you are unable to access it for any reason, please do not hesitate to contact me.
Please see the attached information sheet for details of your right to appeal as well as information on copyright and what to do if you would like to re-use any of the information we have disclosed.
Yours sincerely
Eva Hextall FOI Case Management Team General Counsel Transport for London
