1,223 research outputs found

    Networking Transportation

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    Networking Transportation looks at how the digital revolution is changing Greater Philadelphia's transportation system. It recognizes several key digital transportation technologies: Artificial Intelligence, Big Data, connected and automated vehicles, digital mapping, Intelligent Transportation Systems, the Internet of Things, smart cities, real-time information, transportation network companies (TNCs), unmanned aerial systems, and virtual communications. It focuses particularly on key issues surrounding TNCs. It identifies TNCs currently operating in Greater Philadelphia and reviews some of the more innovative services around the world. It presents four alternative future scenarios for their growth: Filling a Niche, A Tale of Two Regions, TNCs Take Off, and Moore Growth. It then creates a future vision for an integrated, multimodal transportation network and identifies infrastructure needs, institutional reforms, and regulatory recommendations intended to help bring about this vision

    Passengers’ choices in multimodal public transport systems : A study of revealed behaviour and measurement methods

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    The concept of individual choice is a fundamental aspect when explaining and anticipating behavioural interactions with, and responses to, static and dynamic travel conditions in public transport (PT) systems. However, the empirical rounding of existing models used for forecasting travel demand, which itself is a result of a multitude of individual choices, is often insufficient in terms of detail and accuracy. This thesis explores three aspects, or themes, of PT trips – waiting times, general door-to-door path preferences, with a special emphasis on access and egress trip legs, and service reliability – in order to increase knowledge about how PT passengers interact with PT systems. Using detailed spatiotemporal empirical data from a dedicated survey app and PT fare card transactions, possible cross-sectional relationships between travel conditions and waiting times are analysed, where degrees of mental effort are gauged by an information acquisition proxy. Preferences for complete door-todoorpaths are examined by estimation of full path choice models. Finally, longitudinal effects of changing service reliability are analysed using a biennial panel data approach. The constituent studies conclude that there are otherexplanatory factors than headway that explain waiting times on first boarding stops of PT trips and that possession of knowledge of exact departure times reduces mean waiting times. However, this information factor is not evidentin full path choice, where time and effort-related preferences dominate with a consistent individual preference factor. Finally, a statistically significant on-average adaption to changing service reliability is individual-specific andnon-symmetrical depending on the direction of reliability change, where a relatively large portion of the affected individuals do not appear to respond to small-scale perturbations of reliability while others do, all other thingsbeing equal

    Toward a Bio-Inspired System Architecting Framework: Simulation of the Integration of Autonomous Bus Fleets & Alternative Fuel Infrastructures in Closed Sociotechnical Environments

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    Cities are set to become highly interconnected and coordinated environments composed of emerging technologies meant to alleviate or resolve some of the daunting issues of the 21st century such as rapid urbanization, resource scarcity, and excessive population demand in urban centers. These cybernetically-enabled built environments are expected to solve these complex problems through the use of technologies that incorporate sensors and other data collection means to fuse and understand large sums of data/information generated from other technologies and its human population. Many of these technologies will be pivotal assets in supporting and managing capabilities in various city sectors ranging from energy to healthcare. However, among these sectors, a significant amount of attention within the recent decade has been in the transportation sector due to the flood of new technological growth and cultivation, which is currently seeing extensive research, development, and even implementation of emerging technologies such as autonomous vehicles (AVs), the Internet of Things (IoT), alternative xxxvi fueling sources, clean propulsion technologies, cloud/edge computing, and many other technologies. Within the current body of knowledge, it is fairly well known how many of these emerging technologies will perform in isolation as stand-alone entities, but little is known about their performance when integrated into a transportation system with other emerging technologies and humans within the system organization. This merging of new age technologies and humans can make analyzing next generation transportation systems extremely complex to understand. Additionally, with new and alternative forms of technologies expected to come in the near-future, one can say that the quantity of technologies, especially in the smart city context, will consist of a continuously expanding array of technologies whose capabilities will increase with technological advancements, which can change the performance of a given system architecture. Therefore, the objective of this research is to understand the system architecture implications of integrating different alternative fueling infrastructures with autonomous bus (AB) fleets in the transportation system within a closed sociotechnical environment. By being able to understand the system architecture implications of alternative fueling infrastructures and AB fleets, this could provide performance-based input into a more sophisticated approach or framework which is proposed as a future work of this research

    2nd Symposium on Management of Future motorway and urban Traffic Systems (MFTS 2018): Booklet of abstracts: Ispra, 11-12 June 2018

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    The Symposium focuses on future traffic management systems, covering the subjects of traffic control, estimation, and modelling of motorway and urban networks, with particular emphasis on the presence of advanced vehicle communication and automation technologies. As connectivity and automation are being progressively introduced in our transport and mobility systems, there is indeed a growing need to understand the implications and opportunities for an enhanced traffic management as well as to identify innovative ways and tools to optimise traffic efficiency. In particular the debate on centralised versus decentralised traffic management in the presence of connected and automated vehicles has started attracting the attention of the research community. In this context, the Symposium provides a remarkable opportunity to share novel ideas and discuss future research directions.JRC.C.4-Sustainable Transpor

    Future cities and autonomous vehicles: analysis of the barriers to full adoption

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    The inevitable upcoming technology of autonomous vehicles (AVs) will affect our cities and several aspects of our lives. The widespread adoption of AVs repose at crossing distinct barriers that prevent their full adoption. This paper presents a critical review of recent debates about AVs and analyse the key barriers to their full adoption. This study has employed a mixed research methodology on a selected database of recently published research works. Thus, the outcomes of this review integrate the barriers into two main categories; (1) User/Government perspectives that include (i) Users' acceptance and behaviour, (ii) Safety, and (iii) Legislation. (2) Information and Communication Technologies (ICT) which include (i) Computer software and hardware, (ii) Communication systems V2X, and (iii) accurate positioning and mapping. Furthermore, a framework of barriers and their relations to AVs system architecture has been suggested to support future research and technology development

    Investigating the possibility of electronic intermodality and interoperability of innovative urban public transport systems in the City of Tshwane

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    Abstract: Urban areas have the purpose of satisfying citizen’s needs to interact and conduct different activities such as work, study or leisure. Public transport systems are designed to allow the efficiently and reliable movement of people within the city (Amaya et al. 2017). Globally, developed countries always work on different methods in order to have the best formal urban public transportation system. This involves integration of various modes of public transport including technological innovations such as integrated e-smart cards and information dissemination. In South Africa, there has been the development of innovative urban public transport to enhance the public transport network and eliminate negative impacts on the road. Within Gauteng province in the past 10 years, the City of Tshwane has introduced innovative Formal Urban Public Transport (FUPT) systems that will convey commuters efficiently to desired locations with no delays and at more frequent intervals through an effective public transport network. However, the innovative FUPT network is fragmented and departments do not work with one other in any form...M.Tech. (Operations Management

    Multiple Case Comparison of the In-Transit Visibility Business Process

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    Over the past decade, the Department of Defense has developed an In-transit Visibility capability. Despite significant funding and research in developing this capability, the initial deployment in support of Operation ENDURING FREEDOM (OEF) in 2001 highlighted an ongoing problem to achieve ITV within the U.S. Air Force. Initial results from Headquarters USAF initiated studies point to a need to focus on business processes related ITV management. This research employed a multiple case study design embedded in a functional benchmarking process to solicit ITV management best practices from leaders in the civilian logistics industry and to identify gaps between their practices and those of the Air Force. The data collection method used electronic mail as a portal to conducting subject matter expert interviews. Using the data collected from the benchmarking partners, the research recognized 19 best practices and compared the civilian and military environments in 41 areas. This evaluation highlighted gaps between practices used in the civilian industry and those used by the Air Force. These gaps served as areas of opportunity in which the Air Force can evaluate alternative management practices in an effort to improve the ITV process. Using these gaps as a foundation, the research proposed fourteen recommendations for action

    Implementation of advanced transit traveler information systems in the United States and Canada : practice and prospects

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    Thesis (M.C.P. and S.B. in Planning)--Massachusetts Institute of Technology, Dept. of Urban Studies and Planning, 2010.Cataloged from PDF version of thesis.Includes bibliographical references (p. 101-115).Over the past few years, public transit agencies across the United States and Canada have increasingly implemented methods for passengers to access traveler information using new media and personal mobile communications devices. The most advanced examples of these devices, commonly known as "smartphones," combine telephone, Internet browsing, and personal digital assistant (PDA) functionality into a single, portable unit. Mobile data applications are literally exploding on the scene every day, and transit agencies are under tremendous social and political pressure to deploy more related information systems as rapidly as possible. These applications are popular with technology-savvy riders who enjoy easy and real-time access to information and updates about their transit routes and services of choice, anywhere they happen to be. A review of the literature, as well as interviews with managers at thirteen transit authorities across the spectrum of size and technical sophistication, provides a portrayal of the states of the practice and art, and paints a clear picture of the challenges facing implementation of these advanced systems in the field. The research confirms the initial hypothesis that while transit agencies are indeed devoting energy to pursuing advanced traveler information systems, the approaches to implementing them could be improved. Based on the findings, I recommend that transit agencies: conduct necessary market research; develop more explicit and comprehensive traveler information system strategies; clarify the role and business case for social media; secure sufficient financial and technology resources; ensure sufficient operating as well as capital funding; eliminate constraints on use of data from commercial software; and, adopt and embrace open-source software development using an "open government" model.by Anthony Charles Rizos.M.C.P.and S.B.in Plannin
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