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951.
Ying Wang 《Maritime Policy and Management》2018,45(1):3-18
Due to the increase in trade from Korea to Central Asia, an efficient intermodal route for transporting cargo is important. Intermodal routing for long-distance transportation faces operational challenges, such as customs clearance, track gauge differences, and climate limitations. The initiative of the Silk Road Economic Belt recently proposed in China could improve trade and transport links in Asia and create an efficient transportation route that focuses on the railroad service provided in China. The objective of this study is to obtain an evaluation structure for intermodal routing and then find the route for transporting cargo from Korea to Central Asia under China’s Silk Road Economic Belt with integrated Fuzzy Delphi and Fuzzy (Elimination Et Choice Translating Reality (ELECTRE) I methods. After a sensitivity analysis is performed, development strategies and alternative routes are suggested. The results show that among the five principal factors, total cost is the most important factor for logistics companies when they select a transportation route, followed by reliability, transportation capability, total time, and security. Of the sub-factor weights, transportation costs and cooperation and emphasis among state organization are important. In the intermodal route results, route 3, Incheon to Qingdao to Horgos to Almaty, is preferred. 相似文献
952.
Empirical studies showed that travel time reliability, usually measured by travel time variance, is strongly correlated with travel time itself. Travel time is highly volatile when the demand approaches or exceeds the capacity. Travel time variability is associated with the level of congestion, and could represent additional costs for travelers who prefer punctual arrivals. Although many studies propose to use road pricing as a tool to capture the value of travel time (VOT) savings and to induce better road usage patterns, the role of the value of reliability (VOR) in designing road pricing schemes has rarely been studied. By using road pricing as a tool to spread out the peak demand, traffic management agencies could improve the utility of travelers who prefer punctual arrivals under traffic congestion and stochastic network conditions. Therefore, we could capture the value of travel time reliability using road pricing, which is rarely discussed in the literature. To quantify the value of travel time reliability (or reliability improvement), we need to integrate trip scheduling, endogenous traffic congestion, travel time uncertainty, and pricing strategies in one modeling framework. This paper developed such a model to capture the impact of pricing on various costs components that affect travel choices, and the role of travel time reliability in shaping departure patterns, queuing process, and the choice of optimal pricing. The model also shows the benefits of improving travel time reliability in various ways. Findings from this paper could help to expand the scope of road pricing, and to develop more comprehensive travel demand management schemes. 相似文献
953.
文章以重庆绕城高速公路上的走马互通式立交为例,分析了群体优化思路在城市立交群规划布局和方案选择中的应用,总结了城市路网节点处互通式立交选型的一些经验,供同类工程参考。 相似文献
954.
Metin Celik Y. Ilker Topcu 《Transportation Research Part D: Transport and Environment》2009,14(7):502-506
While maritime pollution is often caused at the operational level, the causes can generally be traced back to shortcomings in the ship–shore interface and to poor communication among stakeholders. Here, the environmental responsibilities of maritime stakeholders are systematically analyzed and quantified using an analytic network process. This approach ensures that the most important dependencies and feedbacks among the responsibilities which is applied to a real marine situation (an oil spill) to validate the theoretical basis. A number of latent links between stakeholders’ responsibilities and the catastrophic impacts of the spill are identified. 相似文献
955.
文章在分析广西公路网规划合理规模的主要影响因素和发展阶段特征的基础上,介绍了测算路网合理规模的各种常规方法及其优缺点,并提出了一种分层测算的分析方法,对2020年的广西公路网合理规模进行测算,为类似研究提供借鉴。 相似文献
956.
This paper proposes an innovative approach for designing a road user charging scheme to meet multiple policy objectives. Three
practical features are integrated into the design methodology including (i) cordon formation, (ii) a set of design constraints,
and (iii) multiple objectives of the scheme. The methods also consider possible responses of road travellers to the charging
scheme. Two methods based on genetic algorithms (GA) are developed for optimising a charging cordon scheme with constraints
and with multiple objectives. The dynamic self-adaptive penalty GA and Non-dominated Sorting GA II (NSGA-II) are applied to
the constrained design and multi-objective design respectively. The objective functions or constraints considered include
social welfare improvement, revenue generation, and distributional equity impact. A case study of the City of Edinburgh is
presented and common characteristics of charging cordon designs which perform well against the three objectives are discussed.
相似文献
Agachai SumaleeEmail: |
957.
文章以重庆市道路交通为例,从特殊地理环境因素、城市道路管理及城市规划等方面分析了山区城市道路交通拥挤的原因,并基于道路因素,从城市道路规划和整合建筑与交通空间方面提出了缓解交通拥堵的措施和建议。 相似文献
958.
959.
960.
道路与地形整体模型的构建是实现道路三维可视化的关键。基于在约束delaunay三角网中插入点和约束边的理论,提出一种道路设计面模型的构建方法以及其与地形表面模型融为一体的整体模型构建方法,使得道路设计面模型和地表模型不仅表面上是整合在一起,并且其内部关系也是统一的。对其原理、方法及程序实现进行了介绍。 相似文献