Speaker: Dr. Xianbiao Hu, Associate Professor, Department of Civil and Environmental Engineering, Pennsylvania State University
When
Abstract: This presentation will showcase the Smart Mobility research conducted at Pennsylvania State University. We will start with an overview of the Penn State research facilities and expertise in the realm of smart mobility. The talk will then delve into key research on the analytical formulation of AV merging control with tightly coupled safety and efficiency objectives. For the first time, the effective discharge rate at the merging point, reduced by the multi-stage dynamic merging process, is analytically derived using an explicit closed-form formulation. Leveraging this expression, we derive dynamic traffic flow performance measurements, including queue length and traffic delay, which serve as the first objective. Additionally, a crash risk function is established to quantitatively assess potential collisions during the merging process, serving as the second objective. Finally, we formulate this problem as a dynamic programming problem to jointly minimize delay and crash risk, with the merging location and speed as decision variables. Given the terminal state’s availability, we formulate the ramp vehicle merging task as a recursive optimization problem, employing backward induction to find the minimum-cost solution.
Biography: Dr. XB Hu is an Associate Professor in the Department of Civil and Environmental Engineering at Pennsylvania State University, where he leads the SmartMobility Lab. Before joining PSU, he served as an Assistant Professor at Missouri University of Science and Technology, and was a founding member and Director of R&D at Metropia Inc. He received a PhD degree from the University of Arizona. His research focuses in the area of Smart Mobility System, Dynamic System Modeling, Active Demand Management, Autonomous Vehicles, and Transportation Electrification. He is the Committee Research Coordinator of the TRB Committee on Maintenance and Operations Management (AKR10). Additionally, he is an Associate Editor for IEEE Transactions on Intelligent Transportation Systems, an Associate Editor for the Journal of Intelligent Transportation Systems, a handling editor for Transportation Research Record, and an Associate Editor for The International Journal of Transportation Science and Technology.
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