TfL Ref: FOI-2552-2425

Thank you for your request which we received on 11 November 2024, asking for information about regenerative braking systems in electric rail transit.

Your request has been considered in accordance with the requirements of the Freedom of Information Act and our information access policy. I can confirm that we hold the information you require. 

Please find the attached report which should provide you with the information you are looking for. However, some information, specifically sections 4 and 5, is not pertinent to your request and is out of date, therefore I have redacted it.

Furthermore, in accordance with TfL’s obligations under Data Protection legislation some personal data has been removed, as required by section 40(2) of the FOI Act. This is because disclosure of this personal data would be a breach of the legislation, specifically the first principle which requires all processing of personal data to be fair and lawful. It would not be fair to disclose this personal information when the individuals have no expectation it would be disclosed and TfL has not satisfied one of the conditions which would make the processing ‘fair’. This exemption to the right of access to information is an absolute exemption and not subject to an assessment of whether the public interest favours use of the exemption. 

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