Analytical models of rail transportation service in the grain supply chain: Deconstructing the operational and economic advantages of shuttle train service

This paper introduces conceptual and mathematical models of the domestic grain supply chain incorporating trucking, elevator storage, and rail transportation. We compare conventional rail service supported by country elevators with shuttle service supported by terminal elevators across three critical transportation service dimensions: travel time, cost, and capacity. Even after taking into account trucking and elevator storage, the time and cost model results indicate that shuttle service transports grain faster and reduces logistical supply chain costs, respectively, relative to conventional service. The rail capacity model results demonstrate that shifting grain from conventional to shuttle service significantly increases rail capacity.     

Hazmat facility location and routing analysis with explicit consideration of equity using the Gini coefficient

This paper develops a model to analyze facility location and routing decisions in the context of hazardous materials transportation. A novel aspect of this model is the explicit consideration of equity using the Gini coefficient, an established computation to evaluate equity. To solve the model, we develop a method that combines Lagrangean relaxation with column generation and illustrate that method using a realistic case study. We present a case study of hazardous material railway transportation with consideration of social horizontal equity categorizing the population by household income.     

Can stopovers be induced to revisit transit hubs as stayovers? A new perspective on the relationship between air transportation and tourism

This research examines the potential of transit hubs and affiliated airlines to stimulate future stayover visits by stopover passengers, thereby securing new market opportunities for the host destination and a new relationship between the transportation and tourism sectors. Data were obtained from 694 stopovers who transited with Singapore Airlines through Singapore Changi International Airport but had no prior stayover visit. ‘High influence’, ‘low influence’ and ‘selected influence’ clusters indicated how nine selected services and facilities differentially stimulated their interest to revisit Singapore. Especially influential are generic services such as the Singapore Girl service style, and specific facilities such as the airport Butterfly Garden. These therefore no longer situate as simple facilities that only provide utilitarian transport services for passengers; occupying the blurred boundaries between the transit and destination regions, they frame Singapore's hub airport and national carrier as a type of ‘quasi-destination’. Appropriate strategic considerations are recommended to maximise their conversion potential.     

Integrated production and intermodal transportation planning in large scale production–distribution-networks

We present a model and solution approach for combining production and intermodal transportation planning in a supply network. A close and detailed integration of both decision fields is missing in the literature so far. The model includes relevant decisions regarding production setups and output volumes of plants, cargo consolidation at intermodal terminals, and capacity bookings for road and rail transports. A Branch-and-Cut method and heuristics are designed for solving the problem. A comprehensive case study for a chemical company identified a 6%-cost saving from the integrated planning. At the same time, companies are successfully supported in establishing eco-friendly distribution processes.     

综合交通的发展方向与政策建议

绿色交通是综合交通的发展方向。建议国家大力加强综合交通系统规划、设计、运营、管理的综合协调,建设好绿色综合交通系统。     

全面深化铁路改革 努力开创铁路工作新局面———在中国铁路总公司工作会议上的报告(摘要)简

深入学习贯彻党的十八届三中全会、中央经济工作会议和国务院国发[2013]33号文件精神,总结2013年工作,分析铁路改革发展面临的形势,部署2014年铁路重点工作,动员全路干部职工锐意改革,团结奋战,全面做好铁路各项工作,为国民经济和社会发展作出新的贡献。     

合资铁路委托运输管理的研究

经过多年的发展,合资铁路已经从铁路网的补充发展成为铁路网的骨干,对合资铁路运输管理的研究已成为一项重要的课题.简述了委托代理关系的构成条件,分析了合资铁路公司委托运输管理的特性,研究了委托运输管理中存在的问题,提出了改进委托运输管理的建议.     

Corridors,hybrids and networks: three global development strategies for high speed rail

After 50 years of experience with high-speed rail (HSR) development in Asia and Europe, there are important lessons that can be derived to inform future efforts to introduce HSR. This paper identifies and explores three strategic models of HSR development: (1) exclusive corridors (e.g., Japan), (2) hybrid networks—both national (e.g., France and Germany) and international (e.g., European Union), and (3) comprehensive national networks (e.g., China and Spain). Evaluations of these models yield outcomes that range from generally positive assessments of the corridor and national hybrid models to more concerns and uncertainties about the international hybrid and comprehensive national network models. When applying these lessons to the United States, contextual differences can make direct applications problematic. At the same time, though, certain elements of these three models that have been proven to be successful elsewhere may be adaptable to the U.S. and other newcomers to HSR development.     

A decentralized solution to the car pooling problem

Existing carpool optimization techniques based on the centralized approach serve policy-makers’ goals, but neglect the realities of participants. Moreover, absent strict enforcement, participants often ignore centralized solutions and maximize their own savings. We present a new heuristic, formulated and tested on real-world, and simulated car pooling problem instances, that mimics a decentralized carpool self-organization process. Our findings reveal system-wide savings similar to centralized models, and a potential strategy for improving carpool utilization.     

Complete streets at the municipal level: A review of American municipal Complete Street Policy

The Complete Streets Act of 2009 preceded a proliferation of municipal level complete streets policies across United States. These policies aim to challenge auto-centric street design standards in favor of “complete streets” that are safe for users of all abilities. This proliferation of “complete streets” policy is noteworthy progress in addressing the needs of non-motorized street users and sustainable transportation. However, research that critically and systematically analyzes the specific content of the policies and how they attempt to guide street design decision-making is limited. We address this gap through a review of municipal level Complete Street policy. We sampled a total of 113 municipal level complete streets policies drawn from The National Complete Streets Coalition’s database. We reviewed the policies to inventory their qualitative content, probe their definitions, and understand their implications for design and implementation. We conclude that most municipal Complete Street policies do not guide the negotiation of tradeoff between users within the street right-of-way. The policies are broad and defer to idealistic goals of safely accommodating all user types equally without recognizing the implicit hierarchy of accommodation. This study is limited to analyzing the content of the policies alone; we argue this is a necessary first step in critically thinking through Complete Street policy development and examining if current municipal policies are able to successfully challenge the primary accommodation of automobility. Without a critical analysis, there is a risk of replicating policy that is ineffective at achieving the core goals outlined by the Complete Streets concept.