Request ID: FOI-4703-2324 Date published: 15 April 2024
You asked
Can you please send me information about traffic flow and congestion for the junction of Camberwell New Rd with Lothian and Wyndham Rds (SE5) from 1st January 2019 to the present time (March 2024).
We answered
TfL Ref: FOI-4703-2324 Thank you for your request which we received on 19 March 2024.
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. You asked: Can you please send me information about traffic flow and congestion for the junction of Camberwell New Rd with Lothian and Wyndham Rds (SE5) from 1st January 2019 to the present time (March 2024).
Please see the attached spreadsheet containing the Scoot data for the areas of interest. We have chosen the closest Scoot nodes to the junction listed and the below table helps you identify which have been used for each junction.
Camberwell New Road by Wyndham Road: N09/013a Camberwell New Road inbound: N09/013b & N09/013c Camberwell New Road outbound: N09/013e Camberwell New Road by Lothian: N09/013g
Please see explanation of what each column refers to within the spreadsheet:
SCOOTLink – Refers to the SCOOT Link ID
Location – A brief description of the Location of the Junction typically by road name
LDES – A brief description of the location of the Link typically by road name
Latitude
Longitude
Date – The date of the data
VehicleFlowTotal – The total flow observed within a 24 hour period across all links approaching the junction
FlowDataCompletenessPercentage – Refers to the availability of data; 100% is a complete dataset.
AverageCongestionPercentage – The average congestion within a 24 hour period across all links approaching the junction
CongestionDataCompletenessPercentage – Refers to the availability of data; 100% is a complete dataset
Please Note: SCOOT Flow may differ to flow data 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 long period of time such as in congestion queuing at the lights. The detectors are often sited at a distance from the junction where this is minimised, but sometime especially when junctions are close together this issue is exaggerated. Therefore SCOOT Flow should be used more to generalise trend of demands and not 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. (A congested interval is 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 is and we are not able to validate this data.
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
