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Diagnosis Tool
The Diagnosis Tool is used to diagnose the nature
of safety problems at specific sites. The diagnosis tool includes
a capability to generate collision diagrams for particular sites, to identify
the predominant collision patterns from those diagrams, and to determine
whether those collision patterns represent higher-than-expected frequencies
of particular collision types. The diagnosis tool includes a basic collision diagramming capability
within SafetyAnalyst, but will also be able to interface with selected commercially available collision diagramming software packages, including collision diagramming software with interactive capabilities. The diagnosis tool guides the user through appropriate office and field investigations to identify particular safety concerns at particular locations. Traditional engineering considerations,
as well as a strong human factors component, are used in diagnosis
of safety problems. Output from this step is the identification of
specific accident patterns and the development of a list of safety concerns
that may need mitigation by countermeasures. The diagnosis tool also
provides a capability to identify sites whose observed or expected accident
experience indicates that they are promising candidates for implementation
of particular countermeasures.
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