Description: The EPDO analysis results in an overall crash severity score for intersections so that they can be ranked based on the frequency and severity of their crash histories. The crash severity scores are determined by weighting crashes according to their severity (Fatal/Serious Inj=100, Minor/Possible Inj=10, PDO=1). These weights are based on ODOT’s Safety Priority Index System (SPIS), an industry‑standard methodology used statewide to prioritize locations with higher crash severity. These weights are estimated relative to the cost that a single property-damage-only (PDO) crash has on society (e.g., cost of infrastructure repair, medical costs, work-loss costs, value of quality of life, etc.), which is the lowest cost out of all the severities.
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Description: The EPDO analysis results in an overall crash severity score for street segments so that they can be ranked based on the frequency and severity of their crash histories. The crash severity scores are determined by weighting crashes according to their severity (Fatal/Serious Inj=100, Minor/Possible Inj=10, PDO=1). These weights are based on ODOT’s Safety Priority Index System (SPIS), an industry‑standard methodology used statewide to prioritize locations with higher crash severity. These weights are estimated relative to the cost that a single property-damage-only (PDO) crash has on society (e.g., cost of infrastructure repair, medical costs, work-loss costs, value of quality of life, etc.), which is the lowest cost out of all the severities.
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