Guided by the federal highway administration （FHWA）, many states are promoting the implementation of transportation systems management and operations （TSM＆O） pro- grams. TSM＆O is traditionally managed by traffic...Guided by the federal highway administration （FHWA）, many states are promoting the implementation of transportation systems management and operations （TSM＆O） pro- grams. TSM＆O is traditionally managed by traffic engineers that focus on optimizing ef- ficiency and operations within a particular corridor utilizing common techniques such as re-timings and access modifications. With the emphasis moving towards maximizing current infrastructure, the practice of managing TSM＆O can be applied to all units and disciplines, within a transportation entity, for increased efficiency. One main reason of the stagnated integration is the lack of policies which could support the integration of TSM＆O strategies within the planning or design stages. This paper provides detailed guidance on how to apply TSM＆O strategies from the planning stages to the construction phase of any general transportation project. TSM＆O programs established around the nation are dis- cussed to understand the current initiatives underway and the best practices to create a robust and performance-based program. The developed TSM＆O project cycle process provides a detailed structure for the potential interactions between phases of a project and department staff as a key to ensure that the program achieves the highest level of opti- mization. Continuous evaluation must be undertaken by the agencies to ensure that theperformance of the system is at an optimal level. Developing performance measures, which accurately describe the objectives of the agency, is critical to ensure the plan to be brought to practice.展开更多
作为城市交通基础设施的重要组成部分,公交枢纽(public transport hub,PTH)是城市能源和交通系统的耦合汇聚节点。如何实现PTH和城市配电系统的有机协调发展,在满足公交服务需求的前提下,尽可能地降低电动公交负荷并网的负面影响,并利...作为城市交通基础设施的重要组成部分,公交枢纽(public transport hub,PTH)是城市能源和交通系统的耦合汇聚节点。如何实现PTH和城市配电系统的有机协调发展,在满足公交服务需求的前提下,尽可能地降低电动公交负荷并网的负面影响,并利用其运行灵活性促进电力系统提质增效,已成为未来城市规划的重要课题。为此,该文在深入分析PTH与配电网交互机理的基础上,分别考虑正常和故障情况下PTH参与电网侧需求响应的贡献,提出一种面向PTH灵活性赋能的高可靠性城市配电网多层协同规划方法。模型以系统投资运维总成本最小化为目标,综合考虑电力-交通系统运行和供电可靠性/公交服务质量等多域约束,通过对PTH选址定容、配电线路/变压器扩容以及正常/故障多模场景下系统运营策略进行协同优化,以实现PTH灵活性资源的高效利用和配电系统的可靠经济运行。根据模型中多元场景密切耦合的特点,提出多层Benders分解方法将其等效转化为上层(投资主问题)、中层(正常运行子问题)、下层(故障运行子问题)的三层迭代模型,实现精确高效求解。最后,以修改的IEEE-33节点配电网和北京四惠公交枢纽的实际数据为例,验证了所提模型和方法的有效性。展开更多
为了更好地适应新技术快速发展以及公交服务模式的革新,建立了我国新一代智能公交系统(Advanced Public Transportation System, APTS)体系框架。在对国内外APTS体系框架研究综述的基础上,分析了体系框架在APTS发展的宏观、中观、微观3...为了更好地适应新技术快速发展以及公交服务模式的革新,建立了我国新一代智能公交系统(Advanced Public Transportation System, APTS)体系框架。在对国内外APTS体系框架研究综述的基础上,分析了体系框架在APTS发展的宏观、中观、微观3个尺度的重要作用。针对我国APTS体系框架现状及其应用中存在的不足,提出了科技创新驱动的未来APTS体系框架设计方法和演进思路,设计了体系框架构建、更新迭代的实施流程方法。最后采用要素分类法,通过用户需求分析并结合专家咨询,建立了涵盖4大服务领域、20项用户服务、52项子服务的新一代APTS用户服务体系,并提出了我国新一代APTS的实施路径。展开更多
基金reported in this paper is part of a research project under contract number BDK24-TWO#977-08, which is sponsored by the Florida Department of Transportation (FDOT)
文摘Guided by the federal highway administration （FHWA）, many states are promoting the implementation of transportation systems management and operations （TSM＆O） pro- grams. TSM＆O is traditionally managed by traffic engineers that focus on optimizing ef- ficiency and operations within a particular corridor utilizing common techniques such as re-timings and access modifications. With the emphasis moving towards maximizing current infrastructure, the practice of managing TSM＆O can be applied to all units and disciplines, within a transportation entity, for increased efficiency. One main reason of the stagnated integration is the lack of policies which could support the integration of TSM＆O strategies within the planning or design stages. This paper provides detailed guidance on how to apply TSM＆O strategies from the planning stages to the construction phase of any general transportation project. TSM＆O programs established around the nation are dis- cussed to understand the current initiatives underway and the best practices to create a robust and performance-based program. The developed TSM＆O project cycle process provides a detailed structure for the potential interactions between phases of a project and department staff as a key to ensure that the program achieves the highest level of opti- mization. Continuous evaluation must be undertaken by the agencies to ensure that theperformance of the system is at an optimal level. Developing performance measures, which accurately describe the objectives of the agency, is critical to ensure the plan to be brought to practice.
文摘作为城市交通基础设施的重要组成部分,公交枢纽(public transport hub,PTH)是城市能源和交通系统的耦合汇聚节点。如何实现PTH和城市配电系统的有机协调发展,在满足公交服务需求的前提下,尽可能地降低电动公交负荷并网的负面影响,并利用其运行灵活性促进电力系统提质增效,已成为未来城市规划的重要课题。为此,该文在深入分析PTH与配电网交互机理的基础上,分别考虑正常和故障情况下PTH参与电网侧需求响应的贡献,提出一种面向PTH灵活性赋能的高可靠性城市配电网多层协同规划方法。模型以系统投资运维总成本最小化为目标,综合考虑电力-交通系统运行和供电可靠性/公交服务质量等多域约束,通过对PTH选址定容、配电线路/变压器扩容以及正常/故障多模场景下系统运营策略进行协同优化,以实现PTH灵活性资源的高效利用和配电系统的可靠经济运行。根据模型中多元场景密切耦合的特点,提出多层Benders分解方法将其等效转化为上层(投资主问题)、中层(正常运行子问题)、下层(故障运行子问题)的三层迭代模型,实现精确高效求解。最后,以修改的IEEE-33节点配电网和北京四惠公交枢纽的实际数据为例,验证了所提模型和方法的有效性。
文摘为了更好地适应新技术快速发展以及公交服务模式的革新,建立了我国新一代智能公交系统(Advanced Public Transportation System, APTS)体系框架。在对国内外APTS体系框架研究综述的基础上,分析了体系框架在APTS发展的宏观、中观、微观3个尺度的重要作用。针对我国APTS体系框架现状及其应用中存在的不足,提出了科技创新驱动的未来APTS体系框架设计方法和演进思路,设计了体系框架构建、更新迭代的实施流程方法。最后采用要素分类法,通过用户需求分析并结合专家咨询,建立了涵盖4大服务领域、20项用户服务、52项子服务的新一代APTS用户服务体系,并提出了我国新一代APTS的实施路径。
