| A ranking procedure to identify unsafe intersections is essential to transportation agencies for efficient use of safety improvement resources. The lack of a standard procedure for selecting a safety performance measure for intersections is the cause of discrepancies across agencies. The abundance of performance measures and methodologies further complicates an agency's development of an accurate procedure. This paper presents the development, application, and analysis of a composite ranking methodology using crash data from two corridors in New Castle County, Delaware. The method combines the use of three performance measures: crash frequency, crash severity, and crash type cost. Four crash severity weighting combinations were applied and compared. While the combination developed through engineering judgment is preferred, the top 25 most unsafe intersections did not change significantly regardless of which crash severity combination was used. |
