Recurring concern

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

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First reported 17 Feb 2017•Latest report 11 Aug 2017

Definition

What this concern includes

Includes failures and hazards within the Cycle Super Highway road-surface grip control process, including inadequate grip determination, monitoring, assessment of treated surfaces and remediation or replacement of surfaces whose grip is insufficient or unpredictable.

Not included

Excludes general road-surface defects, standing water, adverse-weather treatment and road-maintenance failures where reduced or uncertain surface grip on a Cycle Super Highway is not the shared unsafe condition.
Excludes generic cycleway design, signage, lighting, visibility and traffic-management deficiencies unless they directly concern controlling road-surface grip.
Excludes vehicle, cyclist or driver behaviour and collision outcomes where no deficient Cycle Super Highway grip control is identified.
Excludes road-surface grip concerns outside Cycle Super Highways unless the assertion explicitly concerns the same Cycle Super Highway grip-control process.

Reports: 2
Individual concerns: 4
Date range: 2017–2017
Stated actions: 4

Reports over time

Reports about this concern issued each year.

* 2026 is projected from reports observed to 7 Sep 2026.

Most frequent recipients

Reports about this concern sent to each recipient.

Transport for London2

Concerns and responses across reports

Only concerns grouped under this recurring concern are included. Select any concern, action or position to view the source wording.

11 Aug2017
London Inner (West)
Concerns raised2
1. Inadequate system for determining grip levels on London roads
2. Failure to monitor grip values on London 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 4
1. Action
  Extend established grip-level determination methods to cycle superhighways.
  Stated by Transport for LondonStated in progress
2. Action
  Apply an updated skid-resistance monitoring policy specifying testing methods and frequencies for cycle superhighways.
  Stated by Transport for LondonStated completed
3. Action
  Survey all carriageway sections of cycle superhighways using SCRIM to provide data for network-management decisions.
  Stated by Transport for LondonStated completed
1. Action
  Implement a grip-testing regime for segregated cycleways using a newly purchased grip tester.
  Stated by Transport for LondonStated in progress
Respondent positions 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 sufficient
AI-generated summary

Milan Dokic · Prevention of Future Deaths report

This summary was generated using AI from the published report. Please read the original report for the complete account.

Report summary

Milan Dokic was travelling by motorcycle on Battersea Park Road on 1 March 2016 in wet conditions when he lost control after entering a blue cycle lane, slid along the road and struck a bollard, sustaining fatal injuries at the scene. The report identified concerns about inadequate systems for determining and monitoring grip levels on Cycle Super Highways and other London roads, and about the effects of adjacent road surfaces with substantially different grip values.

Read the report on judiciary.uk
Source evidence
How this individual concern was interpreted
PFD Monitor created a concise, searchable interpretation from the report wording shown below.
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. ”
Source location
Milan Dokic · Prevention of Future Deaths report
Page 2 · concerns
Open source report
Source evidence
How this individual concern was interpreted
PFD Monitor created a concise, searchable interpretation from the report wording shown below.
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. ”
Source location
Milan Dokic · Prevention of Future Deaths report
Page 2 · concerns
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
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 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 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
17 Feb2017
Inner West London
Concerns raised2
1. Potentially widespread dangerous areas of reduced-grip CSH road surface
2. Failure to provide CSH road surfaces with increased grip for cyclists
This report raised 1 other concern. They are not shown here because they do not form part of this recurring concern.
Responses linked to these concerns
Each statement is shown once, even when linked to more than one concern.

No linked response statements
No respondent-stated action or position is linked to these concerns in the published data.
AI-generated summary

Mr Dokic · Prevention of Future Deaths report

This summary was generated using AI from the published report. Please read the original report for the complete account.

Report summary

Mr Dokic was travelling by motorcycle on Battersea Park Road on 1 March 2016 in wet conditions when he lost control after entering a blue cycle lane, struck a bollard and sustained fatal injuries. The principal concerns were that the cycle highway surface had reduced grip, potentially creating a hazard for cyclists and other vulnerable road users, particularly at junctions, and that similar dangerous areas might exist elsewhere.

Read the report on judiciary.uk
Source evidence
How this individual concern was interpreted
PFD Monitor created a concise, searchable interpretation from the report wording shown below.
PFD Monitor interpretation
Potentially widespread dangerous areas of reduced-grip CSH road surface
Wider context from the report
“1. That the use of the road surface with reduced grip on the CSH compared to the usual road surface represents a hazard to road users making it more likely that they will lose control of their vehicles. 2. That the surface of the CSH with reduced grip may be widespread and as such other dangerous areas may exist. 3. That TfL should therefore undertake an urgent review of all areas treated with such road surface and replace it with the higher grip surface. 4. That the CSH should all have increased rather than reduced grip compared to the ordinary road surface since cyclists are vulnerable road users. ”
Source location
Mr Dokic · Prevention of Future Deaths report
Page 2 · concerns
Open source report
Source evidence
How this individual concern was interpreted
PFD Monitor created a concise, searchable interpretation from the report wording shown below.
PFD Monitor interpretation
Failure to provide CSH road surfaces with increased grip for cyclists
Wider context from the report
“1. That the use of the road surface with reduced grip on the CSH compared to the usual road surface represents a hazard to road users making it more likely that they will lose control of their vehicles. 2. That the surface of the CSH with reduced grip may be widespread and as such other dangerous areas may exist. 3. That TfL should therefore undertake an urgent review of all areas treated with such road surface and replace it with the higher grip surface. 4. That the CSH should all have increased rather than reduced grip compared to the ordinary road surface since cyclists are vulnerable road users. ”
Source location
Mr Dokic · Prevention of Future Deaths report
Page 2 · concerns
Open source report

Data last updated 7 September 2026

What this concern includes

Not included

Reports over time

Concerns raised2

Inadequate system for determining grip levels on London roads

Failure to monitor grip values on London Cycle Super Highways

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

Respondent positions A position is what a respondent says about the concern when they do not describe a specific action.1

Concerns raised2

Potentially widespread dangerous areas of reduced-grip CSH road surface

Failure to provide CSH road surfaces with increased grip for cyclists

Actions described in response 4

Respondent positions 1