摘要: |
In this project, researchers from the University of Florida developed calibration factors for segment- and intersection-level safety performance functions (SPF), equations that relate crash rates to site characteristics, such as traffic volume or roadway geometry. SPFs have been derived for an extensive series of roadway segment or intersection types, called base conditions. Starting with base conditions appropriate to Florida settings, the researchers calibrated SPFs to specific sites using crash modification factors (CMF) based on local data. |