讲座题目：What do walking and e-hailing bring to the scale economies of ride-hailing services?
讲座时间：2024.12.18（周三）17:00-18:00
讲座地点：新主楼A1028
讲座嘉宾：Kenan Zhang 助理教授，洛桑联邦理工学院
主持人：刘天亮 教授
讲座嘉宾 简介
Dr. Kenan Zhang is a tenure-track Assistant Professor at the École Polytechnique Fédérale de Lausanne (EPFL) and leads the Laboratory for Human-Oriented Mobility Eco-system (HOMES). Her research centers at the mathematical modeling, optimization and operations management of urban transportation systems, with special focus on emerging mobility services and technologies. She received her PhD in Transportation Engineering from Northwestern University. Before joining EPFL, she was a postdoctoral research at ETH Zurich.
讲座概要
This paper investigates the impact of walking and e-hailing on the scale economies of ride-hailing services. A microeconomic model is developed to explicitly characterize the physical interactions between passengers and vehicles in a ride-hailing market under different market conditions and matching mechanisms. We show that, although the market exhibits increasing returns to scale in all examined scenarios, e-hailing and walking differ in their influences on the scale economies. Specifically, e-hailing fundamentally changes the market property and compromises the scale economies compared to street-hailing. In contrast, walking only affects the exact value of scale economies, and a street-hailing market is found more sensitive to passengers' walking behaviors. These analytical results are further demonstrated through simulations on a real network with a range of demand-supply densities.
