Compliance and Surrogate Safety Measures for Uncontrolled Crosswalk Crossings in Oregon

This study will assess the relation between operational/geometric factors such as stopping compliance, vehicle volume/speed, crosswalk width, and pedestrian volume and the number or rate of conflicts observed at a particular crosswalk. It is not anticipated that this project will attempt to establish a relation between the number or rate of conflicts observed at a particular intersection and the actual number of crashes. That relation will be a key focus of the literature review but it will not be further evaluated under this project. The objective of this research is to analyze, as robustly as possible, the ability of field measurements and geometric data to predict the expected relative safety of an existing uncontrolled marked crosswalk. The proposed research aims to answer these questions: (1) Can field measures and geometric data be used as a reliable predictor of crosswalk safety performance? (2) Is it possible to utilize field-based surrogate safety measures as a tool to examine the need of crosswalk improvements? The research efforts will focus on uncontrolled marked crosswalks at intersections. The research will attempt to produce a model or method to collect field data and estimate the relative safety of a location.