FOI request detail


Request ID: FOI-1217-1718
Date published: 19 September 2017

You asked

Further to my FOI Request from Jan 2014, please confirm the date of start and completion of the resurfacing and line painting work. Please provide full 3 year before and after data for vehicle volume, speed and accidents for the A23 Brighton Road between Purley Cross and the Coulsdon Bypass. End points for data: 50 metres south of junction of Brighton Road with northern end of Coulsdon Bypass. 20 metres north of junction of Brighton Road with Banstead Road. To include 30 metres up each side road off this length of the A23. Please also provide a map showing the locations of each accident. For accidents, full STATS19 data please. What is the result of the before and after survey for these works? How does any change in accident rate compare with the general change across outer London roads? Please provide the dates when the old speed cameras along this section were switched off and then removed, and when the new ones were installed and then made operational, ie 4 dates in total. The speed data referred to above should include an XLS file of all speed data recorded by these cameras for the past 6 years..

We answered

Our ref: FOI-1217-1718/GH

Thank you for your request received by Transport for London (TfL) on 21 August 2017 asking for information about the A23 Brighton Road between Purley Cross and the Coulsdon Bypass.

Your request has been considered under the requirements of the Freedom of Information Act 2000 and our information access policy. I can confirm that we do hold the information you require.

The resurfacing work took place approximately April – October 2013 (unfortunately we do not have a record of the exact dates).

Please find attached spreadsheets showing the vehicle speed and volume data.

Also attached are the collision records. As we unfortunately do not hold the exact dates of the work, we have assumed the implementation period to be 01 April 2013 to 30 September 2013, and have provided the data set for 36 months to 31 March 2013 (i.e. 01 April 2010 to 31 March 2013) and the after data set for 36 months to 30 September 2016 (i.e. 01 October 2013 to 30 September 2016). Data is for all personal injury collisions on the A23 from Purley Cross to the Coulsdon Bypass for these two periods.

For comparison, we produce a report called Collision Levels in Greater London which gives percentages of different collision types and some collision rates by road class and borough which may be helpful – this can be found on the website under the Research Reports section at

With regard to traffic counts, unfortunately we do not have any relevant count information for this section of the A23. It was last surveyed by our TfL Survey team in 2013 which pre dates the timeframe you have requested. We have permanent Automatic Traffic Counters from which continuous counts can be provided on sections of the A23 which are further south of the area of interest, so again unfortunately they will not be relevant. You can obtain Annual Average Daily Flow Estimates (AADF) for the section of road from the DfT at:









Please find below commissioning dates for safety cameras located on the A23 Brighton Road between Purley Cross and the junction with the Coulsdon Bypass;



Old camera operational from

New camera operational from


A23 Brighton Road N/B by Milestone Drive

08 April 1996

24 April 2015


A23 Brighton Road by Purley Rise       

12 March 1996

16 February 2016


A23 Brighton Road by Lansdowne Road

12 March 1996

16 February 2016


A23 Brighton Road by Purley Road

07 March 1995

25 September 2014

We do not have dates on record for when the old cameras were physically removed from site, however this would have occurred prior to the dates the replacement cameras were commissioned into service.

If this is not the information you are looking for, or if you are unable to access it for some reason, please do not hesitate to contact me.

If you are not satisfied with this response please see the attached information sheet for details of your right to appeal.

Yours sincerely

Graham Hurt

FOI Case Officer

FOI Case Management Team

General Counsel

Transport for London


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