1 Highways Agency Business Plan Performance Measures 2011-12 Guidance Notes The Accident frequency rate of the Highways Agency's supply chain Field Notes Short title The Accident frequency rate (AFR), and severity weighted Accident frequency rate (SWAFR) of the Highways Agency's supply chain. Technical Health and safety performance for construction and maintenance activities is definition monitored using Accident frequency rates (AFRs). AFR is calculated on the basis of incidents reportable under the Reporting of Injuries, Diseases and Dangerous Occurrences Regulations 1995 (RIDDOR), and presented as a 12 month rolling average, per 100,000 hours worked. The same applies to SWAFR, but also includes non-RIDDOR. minor injuries. Road workers include all operatives working on the Highways Agency's (HA's) network who are directly exposed to risks from network users.
2 These include all workers engaged in traffic management activities and incident support services, maintenance and renewal schemes, vehicle recovery operators and any other activities where live traffic is present. Rationale The AFR is recognised by the Health and Safety Executive (HSE) as an industry standard measure. It is widely understood, provides a suitable focus for all RIDDOR injury- incidents and therefore is suitable for measuring workforce health and safety performance. SWAFR allows focus on the outcome of accidents in terms of the severity of injury. Formula AFR. AFR is calculated on the basis of all incidents reportable under RIDDOR and presented as a 12 month rolling average, per 100,000 hours worked. The AFR gives the Accident rate per 100,000 hours worked and is calculated as follows: No. of reportable incidents per year x 100,000. AFR = _____.
3 No. of hours worked in the year Reporting incidents under RIDDOR are: Reportable deaths and major injuries Reportable over-three-day injuries Reportable disease SWAFR. The injury severity weightings applied for the SWAFR measure are presented in Error! Reference source not found. below: Injury Severity Proposed Injury Severity Weighting Fatality (RIDDOR-reportable) 200. 1. Highways Agency Business Plan Performance Measures 2011-12 Guidance Notes Field Notes Major (RIDDOR-reportable) 20. Over Three-day (RIDDOR-reportable) 1. Minor (Non-RIDDOR) The implication of scale in the table above is that the measure considers a major injury as the equivalent of 20 over three-day reportable injuries. A fatality will be considered as the equivalent of 10 major injuries and 200 over three-day reportable injuries. Comparison of calculation of a 12-month rolling average SWAFR with a 12-month rolling average AFR: 12-month rolling average SWAFR 12-month rolling average AFR.
4 (proposed measure) (existing measure). m m (200Bm + 20Cm + Dm + ). m 11. (B. m 11. m + C m + Dm ). 100,000 m 100,000 m Am m 11. A. m 11. m Where m 12 , and: m Rolling month number Am Total number of hours worked by the workforce in month m Bm Number of fatal injuries reported in month m Cm Number of major RIDDOR-reportable injuries reported in month m Dm Number of over three-day RIDDOR-reportable injuries reported in month m Em Number of minor (non RIDDOR reportable) injuries reported in month m Start date AFR data collected since 2007-08. SWAFR date collected since [2011-12]. Latest data AFR data for 2011-12 will be published in the HA Annual Report in June 2012. Performance The public should be looking for a reduction in both measures over time. Behavioural Collecting data should encourage behaviours to reduce AFRs/SWAFRs. impact Comparability The AFR is recognised by the HSE as an industry standard measure and permits comparison across the industry.
5 The SWAFR is a complementary measure allowing the development of more targeted mitigation measures. 2. Highways Agency Business Plan Performance Measures 2011-12 Guidance Notes Field Notes Collection Progress against this measure is reported annually. frequency Time lag 3 months Data source HA Accident and Incident Reporting System (AIRSWeb). This is the system which is used by the HA's supply chain to report accidents, incidents and near misses to the National Health and Safety Team. The relative scale used for the SWAFR is determined by the (societal) costs of injuries provided in the Department for Transport's (DfT's) Transport Analysis Guidance (WebTAG) guidelines. Type of data Management information Robustness Legal requirement to record all RIDDOR incidents. and data AIRSWeb is live with historical data. It allows project managers and area teams to view limitations and report on incidents occurring on their projects and monitor performance.
6 Collecting HA Managing Agent Contractors (Principal Contractors). organisation Return Number format Geographical England coverage How indicator By HA Directorate/MAC Area/Contractor/Project. can be broken down Further None guidance 3.