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Our SPAD Risk analysis addresses an important railway safety issue – Signals Passed at Danger (SPADs) – and uses timetable simulation to give a reliable assessment of how often drivers will see red signals and hence enable railways to manage changes in risk brought about by changes to the timetable. RWA Rail has developed a method that uses timetable simulation to produce data to enable a quantified assessment to be made of potential timetable-related SPAD risks. The tool achieves quantified assessments by calculating how often each signal in the modelled area is approached by a train whilst it is showing a red aspect. A unique advantage of using simulation is that it can also estimate the number of red signals seen by drivers under normal operating circumstances, when some trains are running late. The statistics produced highlight changes in red signals that will be seen by drivers and where there are significant instances, these can then be investigated and, where practicable, the timetable (or the infrastructure configuration) can be changed. Where this is not possible, the results can be used for driver briefing. For more information, please see attached PDF |
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