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This research explored driver comprehension and behaviors with respect to right-turn signal displays with a focus on the Flashing Yellow Arrow (FYA) in a driving simulator and a comprehension survey. Flashing yellow arrows are used in place of other turn signals, such as solid green or flashing yellow or red circles, to indicate that drivers may turn after yielding to oncoming traffic. These turns are considered “permissive.” Turns where no conflicting traffic is present, such as those indicated with a green arrow, are “protected” turns. The flashing yellow arrow’s inclusion in the 2009 Manual on Uniform Traffic Control Devices sped up the signal’s adoption to indicate a permissive turn.
Results from a counter-balanced, factorial design were chosen to explore three independent variables separately: signal indication type and active display, length of the right-turn bay, and presence of pedestrians. Driver decision making and visual attention were collected and analyzed.
Dr. Christopher M. Monsere is Professor and Chair of Civil and Environmental Engineering in the Maseeh College of Engineering & Computer Science at Portland State University. Dr. Monsere's primary research interests are in design and operation of multimodal transportation facilities including user behavior, comprehension, preferences, and the overall safety effectiveness of transportation improvements. Dr Monsere is a member of ANF20, the Bicycle Transportation Committee, the past co-chair of the Transportation Research Board's Safety Data, Analysis, and Evaluation committee (ANB20) and a past member of the TRB Task Force to develop the Highway Safety Manual (ANB25T). Monsere received his BCE from the University of Detroit Mercy; his MSCE and Ph.D.with an emphasis in transportation from Iowa State University. Dr. Monsere is licensed professional engineer in the state of Oregon.
Dr. David Hurwitz conducts research in the areas of transportation human factors, transportation safety, traffic control devices, and engineering education. In particular, Dr. Hurwitz is interested in the consideration of user behavior in the design, evaluation, and innovation of surface transportation systems. Additionally, his program contributes to advancing the state of the practice in transportation engineering education through the development of research based curricula, assessment tools, and learning theories. Dr. Hurwitz leverages the OSU Driving and Bicycling Simulator Laboratory and a significant array of traffic data collection tools to provide a more detailed understanding of how and why transportation systems perform the way they do.
Traffic safety -- Oregon, Pedestrians -- Oregon, Automobile drivers -- Behavior -- Analysis, Pedestrians -- Safety measures
Civil Engineering | Transportation Engineering
Monsere, Christopher and Hurwitz, David, "Driver Comprehension of Permissive Right-Turns with a Flashing Yellow Arrow (FYA)" (2018). TREC Friday Seminar Series. 158.