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Safety Evaluation of Converting Exclusive to Concurrent Pedestrian Signal Phasing

This project will execute an effectiveness of treatment study design comparing observed interactions between pedestrians and motor vehicles at a sample of intersections operating under exclusive pedestrian phasing before and after conversion to concurrent phasing. A control group of exclusive phase intersections that are not converted will be included to account for any background changes in pedestrian and driver behavior from the before to the after period. Each control intersection will be selected to match the physical and traffic characteristics of one of the treated intersections. The safety evaluation will include, for both treatment and control intersections, observation of and analysis of differences in the distribution of pedestrian-vehicle interaction severity and compliance of pedestrians with the pedestrian signal operation. This study design will permit exploration of whether a broader conversion of intersections from exclusive to concurrent pedestrian phasing would be possible without compromising pedestrian safety.