道路甩挂运输组织理论与实践

基于我国道路甩挂运输发展状况,以及交通运输节能减排和道路运输现代化发展要求,现任山东省交通运输厅副厅长的高洪涛和现任教于北京航空航天大学的李红启共同编著《道路甩挂运输组织理论与实践》一书,从理论与实践的角度较为深入地思考了我国发展道路甩挂运输的若干方面。     

广西甩挂运输发展对策研究

道路汽车甩挂运输在货物运输效率和节能减排效果上有显著的效益,正逐步得到社会各界的广泛关注。文章基于广西甩挂运输发展现状,预测分析广西发展道路甩挂运输的市场前景,并提出了广西发展甩挂运输的对策。     

双重甩挂运输组织管理

为了扭转传统集装箱集疏港运输中存在的牵引车等待时间长,空箱运输距离长,运输效率和能效较低的局面,该项目通过在港区附近建立港区运营中心以及在客户端建立若干个客户运营中心,对进出口及内贸货物进行集货、配载,以减少空箱运输。通过"客户点甩挂"、"运营中心甩挂"、"双重运输"等模式提高了牵引车的利用率和运输实载率,实现了节能减排,取得了明显的经济效益。     

甩挂运输:戮力同心融坚冰

道路甩挂运输无疑是一种先进的运输组织方式。发展甩挂运输可以实现经济效益和社会效益的双赢,有人曾经估算,与传统运输相比,甩挂运输可提高车辆运行效率30%-50%,降低成本30%-40%,减少油耗20%-30%,提高运输能力40%以上。     

甩挂联盟 “甩”出山东特色——专访日照三运实业股汾有限公司董事长郭方泉

公路甩挂运输作为一种先进的运输方式，对提高车辆运行效率、节能减排等具有重要的作用。近年来，交通运输部积极推进甩挂运输的发展，甩挂运输试点企业结合自身优势和特点对甩挂运输进行了探索和实践，使甩挂运输方式有了更深入的发展。山东省在推广甩挂运输工作中因地制宜，开拓创新，对甩挂运输工作做了积极的探索和尝试，形成了自己的甩挂特色。     

甩挂联盟 “甩”出山东特色——专访日照三运实业股汾有限公司董事长郭方泉

公路甩挂运输作为一种先进的运输方式，对提高车辆运行效率、节能减排等具有重要的作用。近年来，交通运输部积极推进甩挂运输的发展，甩挂运输试点企业结合自身优势和特点对甩挂运输进行了探索和实践，使甩挂运输方式有了更深入的发展。山东省在推广甩挂运输工作中因地制宜，开拓创新，对甩挂运输工作做了积极的探索和尝试，形成了自己的甩挂特色。     

让甩挂运输“甩”起来

甩挂运输是提高道路货运和物流效率的重要手段，它能够实现经济效益和社会效益的双赢，其早已成为欧美和日本等发达国家和地区的主流运输方式，但是，在我国由于起步较晚，受经济、制度等因素的影响和制约，甩挂运输发展较隧．连推广工作都困难重重。     

让甩挂运输“甩”起来

甩挂运输是提高道路货运和物流效率的重要手段，它能够实现经济效益和社会效益的双赢，其早已成为欧美和日本等发达国家和地区的主流运输方式，但是，在我国由于起步较晚，受经济、制度等因素的影响和制约，甩挂运输发展较隧．连推广工作都困难重重。     

甩挂运输缘何呼声大落实难?

2007年以来,为尽早实现环境友好型,资源节约型的交通行业战略目标,交通部对于发展甩挂运输的呼声一浪高过一浪.无论在制定发展战略、规划和产业政策时,还是在进行结构调整、节能减排等工作中,都多次强调要大力发展甩挂运输.     

连载之六 道路甩挂运输组织理论与实践

道路甩挂运输应急救援道路甩挂运输所用载运工具较一般的道路运输载运工具要复杂,道路甩挂运输生产过程中的安全管理和发生交通事故或者突发事件时的应急救援就显得更重要。一、交通运输安全生产基本原理我国现阶段的交通安全状况不容乐观,在这样的发展背景下,交通运输管理实践的核心任务就是最大限度     

Appraising large-scale investments in a metropolitan transportation system

A package of large-scale investments in the transportation infrastructure in the Stockholm metropolitan region is currently being proposed. It contains new investments in the railway and subway systems as well as new links in the road system. This paper deals with the issue of appraising this kind of investment program. One major problem is the lack of a unique standard method, and it is argued that several tools should be used in a practical evaluation of large-scale investments in the transportation system.Four different approaches are presented and related to each other. First, one study uses a network-based mode-split/assignment model with a fixed trip matrix. The second study is complementary, as its aim is to also trace the impacts on the spatial distribution of population and jobs by applying an integrated transportation and land use model. Third, the long-run effects of the investments on regional economic growth are discussed within the framework of regional production functions. Fourth, an alternative approach is used, in which benefits from the investments are assessed through their estimated influence on aggregate land values.Abbreviations RA Reference Alternative - IP Investment Proposal - IMREL Integrated Model of Residential and Employment Location - RPFM Regional Production Function Model An earlier version of this paper was presented at the 31th European Congress of the Regional Science Association, Lisbon, August 1991.     

Factors influencing support for local transportation sales tax measures

Sales tax measures passed at the local level and dedicated to transportation projects have become increasingly popular in the United States. While revenues from fuel taxes stagnate, growth of local transportation sales taxes (LTSTs), most approved in local elections, has led to a gradual shift of the financial base for transportation projects away from user fees and toward broader-based taxes. In this study, the relationship between voter support and the social, political, and geographic characteristics of the voters is explored. Using precinct-level voting data and census demographic data for three local transportation sales tax elections in Sonoma County, in the San Francisco Metropolitan area of California, regression models were constructed to analyze this relationship. In addition, the relationship between the outcomes of the three measures was explored to better understand which transportation projects might have garnered more support for the successful measure. It was found that the closer voters lived to the transportation projects to be funded, the greater their support. Higher incomes were also positively related to support, controlling for other variables. Political leanings were found to affect support, with the direction of the effect dependent upon the project list in each measure’s expenditure plan. Finally, it appears that the latest measure, which passed successfully, benefited greatly from its multi-modal expenditure plan.     

Distributed coordinated signal timing optimization in connected transportation networks

This paper presents a Distributed-Coordinated methodology for signal timing optimization in connected urban street networks. The underlying assumption is that all vehicles and intersections are connected and intersections can share information with each other. The novelty of the work arises from reformulating the signal timing optimization problem from a central architecture, where all signal timing parameters are optimized in one mathematical program, to a decentralized approach, where a mathematical program controls the timing of only a single intersection. As a result of this distribution, the complexity of the problem is significantly reduced thus, the proposed approach is real-time and scalable. Furthermore, distributed mathematical programs continuously coordinate with each other to avoid finding locally optimal solutions and to move towards global optimality. We proposed a real-time and scalable solution technique to solve the problem and applied it to several case study networks under various demand patterns. The algorithm controlled queue length and maximized intersection throughput (between 1% and 5% increase compared to the actuated coordinated signals optimized in VISTRO) and reduced travel time (between 17% and 48% decrease compared to actuated coordinated signals) in all cases.     

Managing transportation during highway reconstruction: A recommended process

Major highway reconstruction can cause significant disruptions to existing travel patterns and economic activity. Reducing these impacts on travelers, shippers, businesses and residents requires that innovative and effective transportation management actions be developed and implemented. This paper reports the major findings and recommendations of a research study on managing transportation during highway, reconstruction. The primary objectives of the study were

A traffic assignment model for a ridesharing transportation market

A nascent ridesharing industry is being enabled by new communication technologies and motivated by the many possible benefits, such as reduction in travel cost, pollution, and congestion. Understanding the complex relations between ridesharing and traffic congestion is a critical step in the evaluation of a ridesharing enterprise or of the convenience of regulatory policies or incentives to promote ridesharing. In this work, we propose a new traffic assignment model that explicitly represents ridesharing as a mode of transportation. The objective is to analyze how ridesharing impacts traffic congestion, how people can be motivated to participate in ridesharing, and, conversely, how congestion influences ridesharing, including ridesharing prices and the number of drivers and passengers. This model is built by combining a ridesharing market model with a classic elastic demand Wardrop traffic equilibrium model. Our computational results show that (i) the ridesharing base price influences the congestion level, (ii) within a certain price range, an increase in price may reduce the traffic congestion, and (iii) the utilization of ridesharing increases as the congestion increases. Copyright © 2014 John Wiley & Sons, Ltd.     

Provision of accessible transportation alternatives for the transportation handicapped in Taiwan

Four transportation handicapped groups are identified in Taiwan (impaired ambulation, visually impaired, aged, and others) and nine accessible transportation alternatives are proposed. The costs and potential ridership for these nine alternatives in the Taipei area are estimated. Using analytic hierarchy process (AHP) and multicriteria evaluation with qualitative and quantitative data (MEQQD) methods, the most appropriate accessible transportation alternatives for each of the four handicap groups are selected. It is found that the best accessible transportation alternative for the impaired ambulation, the aged, and others would be a demand-responsive lift-equipped specialized van, while half-fare subsidized taxi would be the second-best option. By contrast, the best alternative for the visually impaired would be half-fare subsidized taxi, while conventional bus with broadcast equipment would be the second-best choice.     

Resilience in transportation systems: a systematic review and future directions

ABSTRACT

The Belt and Road (B&R) initiative was introduced by the Chinese government to promote the worldwide economic development and multilateral cooperation between China and the associated countries. As a crucial part of global supply chains, transportation plays a key role to ensure the implementation of the B&R. Safety is one of the issues with great importance in transportation research. However, its foci have been expanded from traditional risk through security to resilience and sustainability. Resilience has attracted considerable interests from both researchers and practitioners across different research domains in recent years. Various studies have been conducted on transportation resilience from different perspectives. Consequently, different definitions have been developed to define and describe resilience. This paper presents a systematic review on transportation resilience with emphasis on its definitions, characteristics, and research methods applied in different transportation systems/contexts. It aims to figure out what transportation resilience is and what kind of essential characters it usually has. More importantly, research challenges are analysed and a future research agenda on the resilience of transportation systems is proposed. This paper will provide comprehensive insights into understanding the transportation resilience, as well as establish new horizons for relevant research topics within the context of the B&R.     

道路货物网络化运输的服务类别和发展模式

基于我国道路货物运输的发展现状,以探索推行道路货物运输网络化的发展模式为主线,以提高道路货物运输组织效率和行业发展水平为最终目标,阐述道路货物网络化运输的概念及内涵,对网络化运输服务进行了划分,构建了我国推行道路货物网络化运输的两类发展模式,并利用图示和文字结合的方式对其进行了分析评价。     

Exploring transportation equity: Development and application of a transportation justice framework

Recent efforts to emphasize social equity in transportation are emerging as local, regional and national governments have set initiatives to identify, existing and potential, disproportionate impacts to low-income and minority populations, also referred to as transportation justice (TJ). Currently, there are suggested methods for identifying transportation justice areas; however, there is no streamlined method instituted across transportation agencies. Each jurisdiction identifies transportation justice (or environmental justice) areas based on their own methodology, typically based on either average regional thresholds, graduated thresholds, or a more unique in-house index methodology. This research explores and evaluates existing methods and develops a rigorous and comprehensive method called the Transportation Justice Threshold Index Framework (TJTIF) using Geographic Information Systems (GIS), as well as factors based on demographics, socio-economics, and transportation/land use. The framework is applied to a case study region in Pennsylvania reflective of the Marcellus Shale impact area, highlighting Sullivan County, PA. The methodology and the case study application serve as an example for how transportation agencies throughout the country can promote social sustainability and enhance transportation equity.