The City of Portland, Bureau of Transportation System Management, analyzes collison patterns at street intersections and produces a report. This document lists locations in the City of Portland that have had twenty or more reported collisions in a four year period.
Complicated intersections count all collisions within their applicable zones.
These reports are compiled from data supplied by the Oregon Department of Transportation's Transportation Development Branch, Transportation Data Section, from records originally received by the Oregon Department of Motor Vehicles. Due to under-reporting of collisions, this list should not be considered to represent all collisions occurring at the intersections listed. Note also, due to the complicated coding procedures, it is possible that there may be additional high collision locations not yet identified. The analysis of the data and the resulting report were accomplished solely by the City of Portland's Bureau of Transportation System Management. There are three ranking lists for each report.