PFD report

Milan Dokic · Prevention of Future Deaths report

Pin Get email alerts Request correction

Issued 11 Aug 2017•London Inner (West)

Report record

Published report and response evidence

This page connects the concerns raised in this report with statements found in recipients’ published responses. A link shows a clear evidence connection; it does not assign responsibility.

View original report
Concerns
2

Raised in this report

Recipients
1

Named on the report

Responses found
1

Of 1 recipient

Stated actions
5

Described in responses

Recipients and published responses

Source document

Full report text

This is the full text from the original published report.

Open published report

Concerns and recipient responses

Select any concern, action or position to view the source wording.

Report evidence summary

Concerns raised2

  1. Inadequate system for determining grip levels on London roads
    Part of recurring concern: Failure to reliably control road-surface grip on Cycle Super Highways
  2. Failure to monitor grip values on London Cycle Super Highways
    Part of recurring concern: Failure to reliably control road-surface grip on Cycle Super Highways
Responses linked to these concerns

Each statement is shown once, even when linked to more than one concern.

Actions described in response An action is something a recipient says it has done, is doing, or plans to do in response to a concern raised.4

  1. Action

    Apply an updated skid-resistance monitoring policy specifying testing methods and frequencies for cycle superhighways.

    Stated by Transport for LondonStated completedThe respondent said that this action was complete when they made their response on 1 October 2017.
  2. Action

    Survey all carriageway sections of cycle superhighways using SCRIM to provide data for network-management decisions.

    Stated by Transport for LondonStated completedThe respondent said that this action was complete when they made their response on 1 October 2017.
  3. Action

    Implement a grip-testing regime for segregated cycleways using a newly purchased grip tester.

    Stated by Transport for LondonStated in progressThe respondent said that this action was in progress when they made their response on 1 October 2017.

Respondent positions A position is what a recipient says about a concern when it does not describe a specific action.1

  1. Position

    Established grip-monitoring methods and a comprehensive skid-resistance policy adequately address determining grip levels on TfL roads and cycle superhighways.

    Stated by Transport for LondonExisting arrangements considered sufficientThe respondent said that existing arrangements were sufficient, so no further action was needed.

Source evidence

How this individual concern was interpreted

PFD Monitor created a concise, searchable interpretation from the report wording shown below. Response links show a clear evidence connection; they do not assign responsibility.

PFD Monitor interpretation

Inadequate system for determining grip levels on London roads

Wider context from the report

“1. There is an inadequate system of determining grip levels on CSH8 and on other Cycle Super Highways and on other roads in London. ”

Is this part of a recurring concern?

Yes — Failure to reliably control road-surface grip on Cycle Super Highways.

Open source report

Source evidence

How this individual concern was interpreted

PFD Monitor created a concise, searchable interpretation from the report wording shown below. Response links show a clear evidence connection; they do not assign responsibility.

PFD Monitor interpretation

Failure to monitor grip values on London Cycle Super Highways

Wider context from the report

“2. There has been a failure to monitor grip values on Cycle Super Highways in London. ”

Is this part of a recurring concern?

Yes — Failure to reliably control road-surface grip on Cycle Super Highways.

Open source report

Source evidence

How this respondent action was interpreted

PFD Monitor created a concise, searchable interpretation from the published response wording shown below.

PFD Monitor interpretation

Apply an updated skid-resistance monitoring policy specifying testing methods and frequencies for cycle superhighways.

Verbatim wording from the response

“We have reviewed the approach to monitoring skid resistance on CSHs and our updated policy sets out the testing method and frequency of the regime for immediate application. All carriageway sections of the CSH have been SCRIM surveyed in the last 3 months to ensure TfL has the appropriate data to make decisions around the management of its cycle network. For segregated cycle-ways, a grip tester machine has been purchased by TfL and a testing regime is being implemented. A grip tester machine is a trailer based continuous surface friction measuring machine, which produces measurements that can be related to SCRIM data.”

Source location

2017-0249-Response
Page 2 · response
Published 1 October 2017

Open published response

Source evidence

How this respondent action was interpreted

PFD Monitor created a concise, searchable interpretation from the published response wording shown below.

PFD Monitor interpretation

Survey all carriageway sections of cycle superhighways using SCRIM to provide data for network-management decisions.

Verbatim wording from the response

“We have reviewed the approach to monitoring skid resistance on CSHs and our updated policy sets out the testing method and frequency of the regime for immediate application. All carriageway sections of the CSH have been SCRIM surveyed in the last 3 months to ensure TfL has the appropriate data to make decisions around the management of its cycle network. For segregated cycle-ways, a grip tester machine has been purchased by TfL and a testing regime is being implemented. A grip tester machine is a trailer based continuous surface friction measuring machine, which produces measurements that can be related to SCRIM data.”

Source location

2017-0249-Response
Page 2 · response
Published 1 October 2017

Open published response

Source evidence

How this respondent action was interpreted

PFD Monitor created a concise, searchable interpretation from the published response wording shown below.

PFD Monitor interpretation

Implement a grip-testing regime for segregated cycleways using a newly purchased grip tester.

Verbatim wording from the response

“We have reviewed the approach to monitoring skid resistance on CSHs and our updated policy sets out the testing method and frequency of the regime for immediate application. All carriageway sections of the CSH have been SCRIM surveyed in the last 3 months to ensure TfL has the appropriate data to make decisions around the management of its cycle network. For segregated cycle-ways, a grip tester machine has been purchased by TfL and a testing regime is being implemented. A grip tester machine is a trailer based continuous surface friction measuring machine, which produces measurements that can be related to SCRIM data.”

Source location

2017-0249-Response
Page 2 · response
Published 1 October 2017

Open published response

Source evidence

How this respondent action was interpreted

PFD Monitor created a concise, searchable interpretation from the published response wording shown below.

PFD Monitor interpretation

Extend established grip-level determination methods to cycle superhighways.

Verbatim wording from the response

“TfL has well established methods to determine grip levels across Transport for London’s Road Network (TLRN) and this is being extended to cover cycle superhighways. TfL implements and follows a comprehensive skid resistance policy which is based on proven industry best practice that is used by major highway authorities such as Highways England, and is supported by the Department for Transport. The policy describes in detail the approach to monitoring roads on the TLRN and identifying areas with a potential lack of grip, prioritising these identified sections for further investigation, and producing a risk rating of identified deficiencies for use in prioritising remedial works.”

Source location

2017-0249-Response
Page 1 · response
Published 1 October 2017

Open published response

Source evidence

How this respondent position was interpreted

PFD Monitor created a concise, searchable interpretation from the published response wording shown below.

PFD Monitor interpretation

Established grip-monitoring methods and a comprehensive skid-resistance policy adequately address determining grip levels on TfL roads and cycle superhighways.

Verbatim wording from the response

“1. There is an inadequate procedure for determining grip levels on CSH8 and on other Cycle Superhighways and on other roads in London”

Source location

2017-0249-Response
Page 1 · response
Published 1 October 2017

Open published response

Other statements in published responses

These actions and other statements could not be clearly connected to one concern in this report.

Recipient-stated actions An action is something a recipient says it has done, is doing, or plans to do in response to a concern raised.1

  1. 1

    Raise differential skid resistance with the UK Roads Board for consideration of specific research.

    Stated by Transport for LondonStated plannedThe respondent said that this action was planned when they made their response on 1 October 2017.

Recipient positions A position is what a recipient says about a concern when they do not describe a specific action.2

  1. 1

    Available research has not indicated that differential skid resistance significantly affects braking or manoeuvring at normal London traffic speeds where grip is appropriate.

    Stated by Transport for LondonDisputes the concernThe respondent disagreed with part of the concern or the basis for it.
  2. 2

    Established industry standards and measurement methods provide a refined scientific approach for assessing and managing road-surface grip.

    Stated by Transport for LondonDisputes the concernThe respondent disagreed with part of the concern or the basis for it.

Source evidence

How this respondent action was interpreted

PFD Monitor created a concise, searchable interpretation from the published response wording shown below.

PFD Monitor interpretation

Raise differential skid resistance with the UK Roads Board for consideration of specific research.

Verbatim wording from the response

“Transport Research Laboratory (TRL) has undertaken significant research in the field of road skid resistance assessment and management. TRL has not, to the best of our knowledge, found anything to indicate that differential skid resistance across a lane has a significant impact on vehicles’ ability to brake and manoeuvre on roads with appropriate grip at normal London traffic speeds. As materials with different skid resistance properties are routinely laid following repairs and reinstatements on highways across the UK, TfL will be raising this issue with the UK Roads Board (an organisation which brings together national and local government from”

Source location

2017-0249-Response
Page 2 · response
Published 1 October 2017

Open published response

Source evidence

How this respondent position was interpreted

PFD Monitor created a concise, searchable interpretation from the published response wording shown below.

PFD Monitor interpretation

Available research has not indicated that differential skid resistance significantly affects braking or manoeuvring at normal London traffic speeds where grip is appropriate.

Verbatim wording from the response

“4. There is a lack of knowledge as to the impact of the adverse effects of having adjacent areas of road with very different grip values.”

Source location

2017-0249-Response
Page 2 · response
Published 1 October 2017

Open published response

Source evidence

How this respondent position was interpreted

PFD Monitor created a concise, searchable interpretation from the published response wording shown below.

PFD Monitor interpretation

Established industry standards and measurement methods provide a refined scientific approach for assessing and managing road-surface grip.

Verbatim wording from the response

“3. There appears to be a lack of a refined scientific approach to measure the grip of the road surface.”

Source location

2017-0249-Response
Page 2 · response
Published 1 October 2017

Open published response
Back to top

Information checked against the published report and official responses · Data reviewed 7 Sep 2026 · About data quality and limitations

Official responses located
1/1

Data last updated 7 September 2026