Crashes in which a person was killed or seriously injured (KSI) were counted and compared to the total number of crashes to determine whether there were any significant differences in their occurrence. Each corridor analysis summarizes the top manners in which crashes occurred. The collision manners include the direction of travel of each party as well as the direction from which the collision occurred. The crash contributing factor describes why each crash happened. Contributing factors include, for example, when one party fails to control their speed, follows too closely, fails to yield the right of way, etc. The top five crash contributing factors are reported for each corridor. Time of day crashes were examined. If a crash occurred at night, the presence or lack of artificial lighting was explored. If this appears to be a potential safety issue for the corridor, that is noted. The speed limit along each corridor was also considered. If a corridor encompasses multiple speed limits, the crash density is calculated for each speed limit section to determine the correlation between speed and the number of crashes. Countermeasure Recommendations
Countermeasure Selection
Based on field observations and crash data analysis, the project team identified countermeasures applicable corridor-wide as well as noted locations that require specific additional countermeasures. The selection of countermeasures was based on FHWA’s Proven Safety Countermeasures initiative (PSCi) 1 . This system of countermeasures is categorized into five major areas, including
Speed management
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Pedestrian/bicyclist
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Roadway departure
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Intersections
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Crosscutting measures
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1 https://highways.dot.gov/safety/proven-safety-countermeasures
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