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Final Report Abstract
Early research suggested protected left-turn signalization had clear safety benefits over permissive left-turn signalization. Yet, subsequent research on when and where to use protected left-turn signalization focused more on vehicle delay and throughput than on safety. Based on such studies, it would be easy to hypothesize that the use of protected left-turn signalization might be reserved more for intersections with high vehicle traffic than those with high pedestrian usage. Part 1 of this study seeks to test that hypothesis to see when and where traffic engineers implement protected left-turn signalization. Part 2 turns to questions around relative safety and addresses the challenges of assessing the possible safety implications of these implementation differences given the existing selective application. Part 3 takes a closer look at pedestrian severe intersection crashes and signalization practices in the state of Colorado to an understanding of the most impactful safety countermeasures to implement at intersections in terms of signalization and beyond.
How to Cite
Tremblatt, Carrie, Mohamed Mesbah, Wesley Marshall, and Bruce Janson. A System Level Analysis of Left-Turning Vehicle-Pedestrian Crashes, MPC-24-564. North Dakota State University - Upper Great Plains Transportation Institute, Fargo: Mountain-Plains Consortium, 2024.