Please can you let me know the RF frequencies that will be / are being used or have been allocated to the DOO system used on the Crossrail platforms through their leaky feeder installations.

---

Our Ref: FOI-0266-1819

Thank you for your request received on 2 May 2018 asking for information about radio frequencies allocated to the Driver Only Operation CCTV system on Crossrail platforms.

Your request has been considered in accordance with the requirements of the Freedom of Information (FOI) Act and our information access policy. We do hold the information you require.

In accordance with the FOI Act, we are not obliged to supply the information you have requested as it is subject to statutory exemptions to the right of access to information, under Section 38(1)(b) of the Act. In this instance the exemption has been applied as disclosure of this information could adversely affect the safety and security of TfL employees and members of the general public.

Whilst we make no suggestion that you would use this information for anything other than you own personal interest, disclosure of this information to you has to be regarded as a disclosure to ‘the public at large’. This information could potentially be obtained and utilised by individuals who may wish to use this information to cause disruption or harm to the network. The TfL network is an attractive terrorist target for several reasons including, its importance to London and the knock on effect to the nation’s economy if it is disrupted, the publicity gained from attacking an iconic transport system and the attractiveness of the system for a mass casualty attack due to its open, mass transport nature. It is also part of the nation’s critical infrastructure by virtue of its central importance to the functioning of London and its economy.

Disclosure of the requested information could compromise security and safety preparedness on our network and would place members of the public and TfL staff at risk by highlighting areas on the network which could be susceptible to being targeted.

The use of this exemption is subject to an assessment of the public interest in relation to the disclosure of the information concerned. We recognise the need for openness and transparency by public authorities, but in this instance the public interest in applying the exemption, in order to minimise risks to operational resilience, safe operation of the London Underground network, the welfare of staff and members of the general public, outweighs the public interest in disclosure.

Please see the attached information sheet for details of your right to appeal.

Yours sincerely

Melissa Nichols

FOI Case Officer

FOI Case Management Team

General Counsel

Transport for London

[email protected]

Back to top

---