TfL Ref: FOI-0172-2122 Thank you for your request of 27th April 2021 asking for Scoot data for various locations in Ealing. Your request has been considered in accordance with the requirements of the Freedom of Information Act and our information access policy. Specifically you asked: “Could you please send me the SCOOT traffic flow / congestion data for the following location in Ealing: - Uxbridge Road/Lower Boston Road junction (Overall junction number and flow/congestion for each branches of the junction) - Uxbridge Road/Hanger Lane (Overall junction number and flow/congestion for each branches of the junction) - Uxbridge Rd/Eccleston Rd ((Overall junction number and flow/congestion for each branches of the junction) ) - Uxbridge Rd/Northfield avenue/Drayton Green ((Overall junction number and flow/congestion for each branches of the junction) . Could I get these data for January 2019 to most recent data possible in 2021. The requested data is attached. Please note that SCOOT flows may differ from other validated counts as the SCOOT system utilises loop occupancy as it primary source of data. This is then modelled into a flow count via an average occupancy per vehicle. This is often sensitive to over or under saturation, e.g. when vehicles are sat over the detector for a long period of time such as when queuing at lights. The detectors are often sited at a distance from the junction where this is minimised, but sometimes - especially when junctions are close together - this issue is exaggerated. Therefore SCOOT Flow should be used more to generalise trends of demand and not as actual counts. SCOOT congestion is defined as the number of consecutive congested intervals in a cycle. It is expressed as a proportion of the cycle time (congested intervals are fully defined as: An interval where any detector on the link has a full interval (detector operated continuously over the four-second interval) and the back of queue is greater than half the maximum or, alternatively, where more than one detector has a full interval.) The data provided here is given as recorded and we are not able to validate it. 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. If you are considering submitting a further FOI request please think carefully about whether the request is essential at this current time, as answering FOI requests will require the use of limited resources and the attention of staff who could be supporting other essential activity. Where requests are made, please note that our response time may be impacted by the current situation. 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, David Wells FOI Case Officer FOI Case Management Team General Counsel Transport for London

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