Request ID: FOI-1705-2122 Date published: 17 November 2021
You asked
Dear Transport for London,
In accordance with the Freedom of Information Act (2000), can you please provide traffic flow and congestion data from any traffic lights enabled with SCOOT (Split Cycle Offset Optimisation Technique), from the following sites in the London Borough of Lambeth since January 2021 to present:
South Lambeth Road/Parry Street
South Lambeth Road/Fentiman Road/Miles Street South Lambeth Road by Wheatsheaf Lane South Lambeth Road/Adlebert Terrace South Lambeth Road/Landsdowne Way Clapham Road/Caldwell Street Clapham Road by Fentiman Road Clapham Road by Elias Place Camberwell New Road/Kennington Park Road/Clapham Road Kennington Oval Harleyford Road Harleyford Road/Dirham Street Durham Street Southbound left turn intp Harleyford road southbound Harleyford Road by Vauxhall Grove Harleyford Road/South Lambeth Road Wandsworth Road/Albert Embankment/Bridgefoot. 2md OTU at 09/576 Brixton Road/Kennington Park Road Camberwell New Road/ Brixton Road Camberwell Road/Foxley Road/Bolton Crescent Camberwell Road/John Ruskin Street Brixton Road/Vassall Road/Caldwell Street Brixton Road by Normandy Road Brixton Road/Loughborough Road
A23 Brixton Road by Villa Road
A23 Brixton Road/Stockwell Road/Gresham Road/ Cantebury Crescent Stockwell Road/Sidney Road/ Stockwell Green Stockwell Road by Rumsey Road Stockwell road by Stockwell Green
A23 Brixton Road by Ferndale Road
A23 Brixton Road/Atlantic Road
A23 Brixton Road ped x outside Brixton Road Station
A23 Brixton Road/Brixton Hill/Acre Lane/Coldharbour Lane Acre Lane/Porden Road Acre Lane by Branksome Road Clapham Park Road/Acre Lane/Kings Avenue/Bedford Road Clapham Road/Bedford Road/Landor Road/Clapham High Street Clapham High Street by Tremadoc Road Clapham High Street by Stonehouse Street Clapham High Street/Clapham Common South Side/The Pavement Clapham Common by the Pavement (Southbound) Clapham Common Southside by Rookery Road Clapham Park Road/Park Hill/Abbeville Road Coldharbour Lane/Atlantic Road Coldharbour Lane/Gresham Road/Barrington Road/Moorland Road Coldharbour Lane/Loughborough Road/Hinton Road Loughborough Road by Minet Road Loughborough Road/Lilford Road/Fiveways Road/Akerman Road Norwood Road/Half Moon Lane/Dulwich Road/ Railton Road 2nd OTU 09/529 Tulse Hill/Brixton Water Lane/Effra Road Tulse Hill by Upper Tulse Hill and Trinity Rise Northwood Road/Croxted Road Thurlow Park Road/Croxted Road
A205 Thurlow Park by Lovelace Road and Elmcourt Road Norwood Road/Tulse Hill/Thurlow Park Road Norwood Road/ Christchurch Road Norwood Road Southbound 5 metres South of Christchurch Road Streatham High Road by Broadlands Avenue South line share 09/055 Streatham High Road South of Leigham Road Streatham High Road by Leigham Road North Bound Streatham Hill/Streatham High Road/ Sternhold Ave/Leigham Court Road Streatham Hill/Dowton Avenue (Northbound) Streatham Hill/Dowton Avenue (Southbound) Streatham Hill/Wavertree Road (Northbound) Streatham Hill/Wavertree Road (Southbound) Streatham Hill/Brixton Hill/Christchurch Road/Streatham Place
A205 Chrustchurch Road by Cotherstone Road Streatham Hill by Tierney Road (Northbound) Streatham Hill by Tierney Road (Southbound) Brixton Hill by Holmewood Road Brixton Hill/Elm Park/Jebb Avenue Brixton Hill/Blenheim Gardens/Fairmount Road Brixton Hill/Brixton Water Lane/Trent Road Brixton Road by Haytor Road
A23 Brixton Hill/Saint Matthew's Road/Porden Road Streatham Place/Atkins Road/ New Park Road King's Avenue/Poynders Road/Atkins Road Clarence Avenue/Poynders Road Cavendish Road/Poynders Road/Hazebourne Road Clapham South Side/The Avenue/Cavendish Road
We answered
TfL Ref: 1705-2122
Thank you for your request received by us on 17 October 2021 asking for information about Split Cycle Offset Optimisation Technique (SCOOT) data covering various locations in the London Borough of Lambeth from January 2021 onwards.
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 for:
Split Cycle Offset Optimisation Technique) data from the following sites in the London Borough of Lambeth since January 2021 to present:
South Lambeth Road/Parry Street
South Lambeth Road/Fentiman Road/Miles Street South Lambeth Road by Wheatsheaf Lane South Lambeth Road/Adlebert Terrace South Lambeth Road/Landsdowne Way Clapham Road/Caldwell Street
Clapham Road by Fentiman Road Clapham Road by Elias Place Camberwell New Road/Kennington Park Road/Clapham Road Kennington Oval Harleyford Road Harleyford Road/Dirham Street Durham Street Southbound left turn intp Harleyford road southbound Harleyford Road by Vauxhall Grove Harleyford Road/South Lambeth Road Wandsworth Road/Albert Embankment/Bridgefoot. 2md OTU at 09/576 Brixton Road/Kennington Park Road Camberwell New Road/ Brixton Road Camberwell Road/Foxley Road/Bolton Crescent Camberwell Road/John Ruskin Street Brixton Road/Vassall Road/Caldwell Street Brixton Road by Normandy Road Brixton Road/Loughborough Road
A23 Brixton Road by Villa Road
A23 Brixton Road/Stockwell Road/Gresham Road/ Cantebury Crescent Stockwell Road/Sidney Road/ Stockwell Green Stockwell Road by Rumsey Road Stockwell road by Stockwell Green
A23 Brixton Road by Ferndale Road
A23 Brixton Road/Atlantic Road
A23 Brixton Road ped x outside Brixton Road Station
A23 Brixton Road/Brixton Hill/Acre Lane/Coldharbour Lane Acre Lane/Porden Road Acre Lane by Branksome Road Clapham Park Road/Acre Lane/Kings Avenue/Bedford Road Clapham Road/Bedford Road/Landor Road/Clapham High Street Clapham High Street by Tremadoc Road Clapham High Street by Stonehouse Street Clapham High Street/Clapham Common South Side/The Pavement Clapham Common by the Pavement (Southbound) Clapham Common Southside by Rookery Road Clapham Park Road/Park Hill/Abbeville Road Coldharbour Lane/Atlantic Road Coldharbour Lane/Gresham Road/Barrington Road/Moorland Road Coldharbour Lane/Loughborough Road/Hinton Road Loughborough Road by Minet Road Loughborough Road/Lilford Road/Fiveways Road/Akerman Road Norwood Road/Half Moon Lane/Dulwich Road/ Railton Road 2nd OTU 09/529 Tulse Hill/Brixton Water Lane/Effra Road Tulse Hill by Upper Tulse Hill and Trinity Rise Northwood Road/Croxted Road Thurlow Park Road/Croxted Road
A205 Thurlow Park by Lovelace Road and Elmcourt Road Norwood Road/Tulse Hill/Thurlow Park Road Norwood Road/ Christchurch Road Norwood Road Southbound 5 metres South of Christchurch Road Streatham High Road by Broadlands Avenue South line share 09/055 Streatham High Road South of Leigham Road Streatham High Road by Leigham Road North Bound Streatham Hill/Streatham High Road/ Sternhold Ave/Leigham Court Road Streatham Hill/Dowton Avenue (Northbound) Streatham Hill/Dowton Avenue (Southbound) Streatham Hill/Wavertree Road (Northbound) Streatham Hill/Wavertree Road (Southbound) Streatham Hill/Brixton Hill/Christchurch Road/Streatham Place
A205 Chrustchurch Road by Cotherstone Road Streatham Hill by Tierney Road (Northbound) Streatham Hill by Tierney Road (Southbound) Brixton Hill by Holmewood Road Brixton Hill/Elm Park/Jebb Avenue Brixton Hill/Blenheim Gardens/Fairmount Road Brixton Hill/Brixton Water Lane/Trent Road Brixton Road by Haytor Road
A23 Brixton Hill/Saint Matthew's Road/Porden Road Streatham Place/Atkins Road/ New Park Road King's Avenue/Poynders Road/Atkins Road Clarence Avenue/Poynders Road Cavendish Road/Poynders Road/Hazebourne Road Clapham South Side/The Avenue/Cavendish Road
Please see the explanations below in reference to the descriptions provided in each column within the spreadsheet:
SCOOTLinkID – Refers to the SCOOT Link ID
LinkDescription – A brief description of the location of the Link typically by road name
NodeDescription – A brief description of the Location of the Junction typically by road name
Latitude
Longitude
Date – The date of the data
TwentyFourHourVehicleFlowTotal – 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
We would like to advise that SCOOT Flows may differ from flows of other validated counts as the SCOOT system utilises loop occupancy as its primary source of data, which is then modelled into a flow count via an average occupancy per vehicle. This is often sensitive to over or under saturation, for example when vehicles are sat over the detector for long periods of time such as during congestion queuing at traffic 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 trend of demands and not actual counts.
In addition, 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. As the data has been extracted from our Urban Traffic Control SCOOT system, we are unable 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.
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
Jasmine Howard FOI Case Officer FOI Case Management Team General Counsel Transport for London
