The CFw or Control Framework is an exhaustive and rigorous analysis that identifies what an organisation should have in place for operations involving mobile machinery to consistently perform well.

The method is described in more detail in this article.

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Control Framework for Vehicle Interactions

A graphic visualisation of the Control Framework in a format that presents the:

  • Required Operating States in a short format - and then provides an overview (in the right hand panel) of the detailed description developed by EMESRT contributors
  • Failure Modes in a summary format. Each of the Required operating states is (in detail) impacted by 10 or more credible failure modes. The summary information for these is described by clicking on each of the second order bubbles, and finally
  • Business Inputs which address these failure modes appear as a list on the right hand side panel of the graphic

Feedback on this analysis is welcomed, and as it is generated dynamically ongoing changes will be made to this presentation as new incidents and emerging technologies inform the failure modes and business inputs presented.


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00 - Required Operating State Management Sheets

The spreadsheet available as an attachment on this document contains a complete listing of all of the identified required operating states (ROS).

It contains:

  • An overview sheet - which gives the name and intent of each identified required operating state
  • Separate sheets for each ROS that includes:
    • A listing of the Credible Failure modes (CFM) which could impact/cause the ROS to be lost
      • Corresponding Business Inputs which address the CFM and prevent them from causing a drift away from meeting safe and productive outcomes

This resource underpins other resources provided by EMESRT and can help to inform:

  1. Self Assessment activities in the subject area
  2. Incident analyses (where the sequence is to identify the ROS that has been compromised, explore the mechanism (CFM) which caused this and then identify system deficiencies in Business Inputs applied)
  3. Statistical analyses - by mapping existing incident/hazard data against identified CFMs



CFM 5SS-05 Unit key system alarms are not monitored

 Credible Failure mode is addressed by:

  • BI-01P.08 Alarm and vehicle information panel expected response - information prepared for Operators
  • BI-02D.10 Operator ergonomics are considered for controls and before introducing vehicle alarms and other aids
  • BI-02P.04 Regular checking and maintenance of alarms, monitors, cameras and other warning devices
  • BI-02P.11 Protocols that detail how the status of vehicle alarms and monitors are checked prior to use
  • BI-02S.30 Equipment systems data send
  • BI-02T.30 Component alarm or safety device compromise data send



CFM 5SS-04 Equipment faults arising from poor standard of maintenance


CFM 5SS-03 No aggregated monitoring and response to over speed alarms

 Credible Failure mode is addressed by:

  • BI-01P.07 Site specific travelling speed information prepared for vehicle operators
  • BI-02P.05 Regular checking and maintenance of speed measuring systems
  • BI-03S.20 Speed and other operating parameter data send


CFM 5SS-02 Operator fails to comply with site requirements

 Mobile equipment operator or pedestrian fails to comply with site requirements, caused by:

  • Failure to follow operating instructions e.g. forklift driving with elevated load
  • Ignoring directions or instructions in site communications (signs, work orders, supervisor given)
  • Deliberate and/or a lapse when working with, in or around mobile equipment
  • Use of Personal Electronic Devices outside site rules and requirements
  • Right of way rules not being followed
  • Fatigue/Fitness for Work - not matching lifestyle/behaviours with requirements for personal alertness to meet site requirements

 Credible Failure mode is addressed by:

  • BI-01P.01 Trained, Competent and Authorised Mobile Equipment Operators
  • BI-01P.02 Task expectations are well communicated and reinforced over the work shift.
  • BI-01S.01 Clear operator performance management expectations supported by an active and consistent performance management process
  • BI-01S.03 Consultation and communication on safety and health
  • BI-05D.03 Effective contractor management processes
  • BI-05P.06 Structured line and functional support for supervisors when applying site performance management processes
  • BI-05S.01 Regular and consistent application of performance management processes