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Frank Bird Accident Triangle show the relationship between numbers of accidents with different outcomes. Research shows that this relationship forms a triangle, with the most serous outcomes being the least numerous at the top and those with proportionally higher numbers but less serous results forming the base.
The important message of the accident triangle is that serous outcome accidents tend to happened rarely and randomly. they are notoriously difficult to predict. Near misses/incidents, on the other hand, happen far more frequently. Many near misses will be minor events of little or no consequences; if they happen again there would be no serous outcome. but some near misses will have the potential for very serous injury. These near misses should be thoroughly investigated and preventive measures put in place to avoid the recurrence.
