Career: Synthesis of Freight Origin-Destination Matrices from Intelligent Transportation Systems Data

职业：根据智能交通系统数据合成货运出发地-目的地矩阵

• 批准号: 0245165
• 负责人: Jose Holguin-Veras
• 金额: --
• 依托单位: Rensselaer Polytechnic Institute
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-08-31 至 2008-02-29
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0245165&HistoricalAwards=false
• 关键词: Career; Synthesis; Freight; Origin; Destination

0092938ABSTRACTThe research component of this proposal focuses on designing a methodological framework that, ultimately, will lead to the estimation of origin-destination matrices for freight movements, using secondary data, gathered through Intelligent Transportation Systems. These methodologies will improve transportation modeling by adding another layer of realism to the modeling process; and they will improve the efficiency of traffic management by ensuring proper consideration of freight movements, significant contributors to urban congestion. Furthermore, enhanced consideration of freight transportation will benefit the transportation planning process as a whole, making it truly multimodal in its scope. Such approaches will bypass two major obstacles in freight planning: the significant cost associated with conducting surveys to obtain origin-destination patterns, and the reluctance of freight providers to provide information they consider commercially sensitive. The research plan has the following three objectives: 1) to develop a framework for the synthesis of origin-destination matrices in real-time, based on information gathered through Intelligent Transportation Systems in transportation networks; 2) to create a platform for the display of estimated freight movements; and, 3) to develop methodologies for the integration of real-time information on freight movement into the evaluation process and the analysis of traffic control strategies. The proposal considers the use of the Integrative Freight Market Simulation (IFMS). The IFMS attempts to depict a comprehensive picture of freight movements, in which both the user side, i.e., commodity flows, and the logistic side, i.e., vehicle-trips, are considered. The uniqueness of freight transportation requires the use market equilibrium concepts to depict the competition process among freight transportation providers, and a subset of routing problems to represent the actions of these companies when picking up and delivering the goods. The IFMS entails a bi-level approach in which the top level corresponds to the estimation of the provision of service consistent with a Cournot-Nash equilibrium, while the bottom level focuses on the construction of tours that satisfy the Cournot-Nash solution and the remaining system constraints, in a context of a large scale optimization problem. Although a multitude of issues need to be solved before this concept becomes operational, the IFMS has the potential to enhance freight modeling.An integrated educational plan is included as part of this proposal. The educational plan is intended to achieve the following objectives: a) to provide students with leadership experience in addressing complex problems, such as those in freight transportation; b) to create an atmosphere of cooperation among stakeholders; c) to provide both undergraduate and graduate students with the tools they need to analyze freight transportation problems; b) to provide the students with a thorough understanding of the interplay between transportation and the environment, and the role of transportation in the betterment of local communities; c) to provide the students with the foundations for a life long search for excellence; d) to provide the students with the opportunity to tackle real-life problems and to contribute to their solution; e) to provide meaningful and stimulating career choices for minority students and women. Achieving these objectives will: a) lead to the creation of a new generation of transportation professionals with a wholistic view of the interactions between freight transportation, the environment and economic development; b) lead to a transportation planning process sensitive to, and responsive to, community concerns, and economic development issues; c) enhance the quality of research and education by incorporating real-life problems and challenges into the class room interactions; d) promote retention among minority students and women; e) introduce students to the potential benefits of using modern information technology in multi-disciplinary settings.

[0092938]本提案的研究部分侧重于设计一个方法框架，该框架最终将使用通过智能交通系统收集的二手数据来估计货运运动的出发地-目的地矩阵。这些方法将通过在建模过程中添加另一层现实主义来改进运输建模；它们还将提高交通管理效率，确保适当考虑造成城市拥堵的主要因素货运。此外，加强对货物运输的考虑将有利于整个运输规划过程，使其在其范围内真正实现多式联运。这种办法将绕过货运规划方面的两个主要障碍：进行调查以获得始发目的地模式所涉的重大费用，以及货运供应商不愿提供他们认为具有商业敏感性的资料。该研究计划有以下三个目标：1)基于交通网络中智能交通系统收集的信息，开发实时合成始发-目的地矩阵的框架；2)创建一个显示估计货运量的平台；3)开发将货运实时信息整合到交通控制策略评估和分析过程中的方法。该建议考虑使用综合货运市场模拟（IFMS）。IFMS试图描绘货运运动的全面图景，其中考虑到用户方面，即商品流动和物流方面，即车辆旅行。货运的独特性要求使用市场均衡概念来描述货运供应商之间的竞争过程，并使用路由问题子集来代表这些公司在取货和交付货物时的行为。IFMS需要一种双层方法，其中顶层对应于与库尔诺-纳什均衡一致的服务提供的估计，而底层则侧重于在大规模优化问题的背景下，满足库尔诺-纳什解决方案和剩余系统约束的旅游建设。尽管在这一概念投入使用之前还有许多问题需要解决，但IFMS有潜力增强货运建模。综合教育计划是这一建议的一部分。该教育计划旨在达到以下目标：a)为学生提供解决复杂问题的领导经验，例如货运问题；B)在利益相关者之间创造合作氛围；C)为本科生和研究生提供分析货运问题所需的工具；B)让学生全面了解交通与环境之间的相互作用，以及交通在改善当地社区中的作用；C)为学生提供终身追求卓越的基础；D)为学生提供解决现实问题的机会，并为解决这些问题做出贡献；E)为少数民族学生和妇女提供有意义和刺激的职业选择。实现这些目标将：a)培养新一代的运输专业人员，他们对货运、环境和经济发展之间的相互作用有全面的认识；B)引导交通规划过程对社区关注和经济发展问题敏感并作出反应；C)通过将现实生活中的问题和挑战纳入课堂互动，提高研究和教育的质量；D)促进少数民族学生和女性的保留；E)向学生介绍在多学科环境中使用现代信息技术的潜在好处。