2019年研究生学术前沿讲座（31）
主 讲 人：William H.K. Lam 教授 香港理工大学
主题名称：
- Intelligent Transportation Systems (ITS) for Smart Mobility: Opportunities and Challenges in Hong Kong
- Promoting social equity with cyclic tradable credits
内容简介
- Due to the topography and urban development constraints of Hong Kong, there are hardly any available spaces for further expansion of the existing road transport network. Recent development of advanced technologies and availability of Big Data provide opportunities and challenges for development of smart transportation systems in Hong Kong with the use of multi-source data and emerging technologies. In this presentation, an overview of recent development of intelligent transportation systems (ITS) in Hong Kong road network will firstly be given together with further extensions to reliability-based ITS. It will cover the challenges encountered for ITS development in Hong Kong, the provision of real-time road traffic information using limited available data from multiple sensor systems (on-line data) in combination with historical data (off-line data), and a reliability-based routing service with on-time arrival probability, etc. The potential research and development on the extensions of ITS in Hong Kong and cross-boundary ITS applications in the Greater Bay Area will also be discussed together with the opportunities and challenges ahead.
- This study manages the network mobility with link-based cyclic tradable credit scheme (CTCS) in a general transportation network. Different from most previous studies on trad- able credit schemes, which always assume an independent periodic credit distribution scheme to maintain the circulation of the credits in the system with nonnegative credit charges, in our model the compensatory credits could be charged from (i.e. positive credit rate) or subsidized to (i.e. negative credit rate) the travelers. With the introduction of cyclic tradable credit scheme, we pursue three objectives: system optimization, social equity, and most importantly, credit internal cycling without periodic credit expiration and distribu- tion. We formulate a minimization problem to solve for the scheme to fulfill the three ob- jectives and discuss the existence of the solution via the dual problem. We prove that there is no negative cycle under the proposed CTCS, and when the origin-destination (OD) ma- trix of the network satisfies certain conditions, the Pareto-improving solution exists. How- ever, for general networks with origins and destinations overlapping with each other, the solution may not always exist. Nevertheless, in contrast to several traditional toll schemes, the equity among the travelers from different OD pairs under the proposed CTCS is still improved. Numerical experiments are provided to demonstrate the existence/nonexistence of the CTCS under different situations and to compare the performances among different schemes.
时间地点：2019-7-2周二 9:00 交运楼115室
主办学院：交通运输学院
365足球外围平台
2019.7.1
分类: