Alleviating Travel Delay Uncertainties in Traffic Assignment and Traffic Equilibrium

缓解交通分配和交通均衡中的出行延误不确定性

• 批准号: 0824674
• 负责人: Georgia Perakis
• 金额: --
• 依托单位: Massachusetts Institute of Technology
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-08-01 至 2012-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0824674&HistoricalAwards=false
• 关键词: Alleviating; Travel; Delay; Uncertainties; Traffic

This grant provides funding in order to tackle traffic equilibrium, traffic assignment and route guidance problems when travel costs/delays are uncertain. The main goals are to alleviate congestion and better manage traffic in the face of ?uncertain conditions?. Our goal is to utilize ideas from three fields: stochastic optimization/ stochastic variational inequalities, robust (and adjustable robust) optimization and finally, learning theory from Statistics. These approaches will allow us to address the aspect of uncertainty in data parameters in a tractable way. Our research contributions will be to (i) design and study a variety of formulations - involving stochastic optimization, robust optimization and learning - of key traffic flow planning and management models, (ii) understand how to incorporate effectively the inherent element of stochasticity in the nature of traffic delays in a way that does not depend on distributional assumptions on the data, (iii) examine efficient solution methods of these problems and finally, and (iv) validate our results computationally.If successful, the results of this project will provide solutions to key traffic planning and management problems that are robust to uncertainty in terms of travel delays. The potential applications and hence impact of this research to a variety of logistical networks are very significant. In the area of transportation, this research will impact both the fields of Advanced Traveler Management Systems (ATMS) and Advanced Traveler Information Systems (ATIS). This research aims at using methodologies from a variety of fields with the long term goal to not only advance knowledge and deepen our understanding of issues in transportation and as they relate to ATMS and ATIS, but also to contribute to these fields by developing creative and innovative concepts. The goal is to build an integrated framework, models and solution techniques for the application of stochastic optimization and robust optimization to key traffic planning and management problems and related areas that are accessible to all, in order to help transportation academics and practitioners. From an educational perspective, the results of this project will serve as components in teaching modules at MIT. These include modules in core courses the PI has already been one of the key contributors. This project lends itself ideally to mentoring undergraduate and graduate students.

该拨款提供资金，以解决旅行成本/延误不确定时的交通平衡、交通分配和路线引导问题。其主要目标是缓解拥堵，更好地管理交通面临的？不确定的条件？我们的目标是利用三个领域的思想：随机优化/随机变分不等式，鲁棒（和可调鲁棒）优化，最后，从统计学学习理论。这些方法将使我们能够以易于处理的方式解决数据参数中的不确定性问题。我们的研究贡献将是（i）设计和研究各种公式-包括随机优化，鲁棒优化和学习-关键交通流规划和管理模型，（ii）了解如何有效地将随机性的固有元素纳入交通延误的性质，而不依赖于对数据的分布假设，（iii）研究这些问题的有效解决方法，最后，和（iv）验证我们的计算结果。如果成功的话，这个项目的结果将提供解决方案的关键交通规划和管理问题，是强大的不确定性方面的旅行延误。这项研究对各种物流网络的潜在应用和影响是非常重要的。在交通领域，这项研究将影响先进的旅行者管理系统（ATMS）和先进的旅行者信息系统（ATIS）的领域。本研究旨在使用各种领域的方法，其长期目标不仅是提高知识，加深我们对交通问题的理解，因为它们与ATMS和ATIS有关，而且还通过开发创造性和创新性的概念为这些领域做出贡献。其目标是建立一个综合框架，模型和解决方案技术的应用随机优化和鲁棒优化的关键交通规划和管理问题和相关领域，是所有人都可以访问，以帮助交通学者和从业人员。从教育的角度来看，该项目的成果将作为麻省理工学院教学模块的组成部分。其中包括核心课程中的模块，PI已经成为关键贡献者之一。这个项目非常适合指导本科生和研究生。