Hogarth Roundabout Road Safety Risk Comparison with other London Junctions
Request ID: FOI-1557-2425 Date published: 10 September 2024
You asked
TfL's Simon Carroll explains that proposed changes to the Hogarth Roundabout are because it 'is in the top 10 percent of junctions in London in terms of road safety risk'.
Please send me the review of London junctions on which this claim is based. I wish to know which they are (and how many) with detailed data on their road safety risk between January 2020 and February 2024.
We answered
Our Ref: FOI-1557-2425 Thank you for your request received on 13 August 2024 asking for information about the Hogarth Roundabout proposal. Your request has been considered in accordance with the requirements of the Environmental Information Regulations (EIR) and our information access policy. I can confirm that we do hold the information you require. You asked: TfL's Simon Carroll explains that proposed changes to the Hogarth Roundabout are because it 'is in the top 10 percent of junctions in London in terms of road safety risk'. Please send me the review of London junctions on which this claim is based. I wish to know which they are (and how many) with detailed data on their road safety risk between January 2020 and February 2024.
The base data used for developing the scheme is unchanged. There was an error in describing the data on the consultation website but this did not influence the development of the proposals as the data relied upon remains the same.
I can confirm that there were 20 collisions in the three year data collection period (between July 2020 and June 2023), resulting in 21 casualties - 18 slight and three serious. This is because one of the collisions involved two casualties. Please see the requested information attached. TfL identify road safety priority locations by considering the number and severity of collisions and casualties at each major road and junction in London. At each location, a severity-weighted harm score is calculated and compared with the network average. Roads and junctions are ranked according to the extent to which their harm score is higher than the network average, enabling the prioritisation of investment. The harm score at Hogarth Lane roundabout is higher than the TLRN network average, as shown by the data extract provided. The magnitude of this difference places this roundabout as the junction with the 239th highest harm score out of 4,821 junctions considered. 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. Yours sincerely Gemma Jacob Senior FOI Case Officer FOI Case Management Team General Counsel Transport for London [email protected]
