scholarly journals Evaluating Satisfaction in Shared Lanes as Part of Sustainable Transport Infrastructure by Using VR Technology – Evidence from Urban China

2021 ◽  
Vol 33 (4) ◽  
pp. 505-515
Author(s):  
Weite Lu
Keyword(s):  
Urban China ◽  
Transport Infrastructure ◽  
Parking Space ◽  
Sustainable Transport ◽  
Lateral Separation ◽  
Traffic Condition ◽  
Traffic Demand ◽  
Lane Width ◽  
Main Factors ◽  
Group 2

The concept of sharing transport infrastructure has become increasingly prominent in the sustainable society due to limited resources in urban cities. Shared lanes where cars, electric motorcycles, and bicycles are permitted have been promoted in urban China to overcome the shortage of road space available to meet the increasing traffic demand. Based on VR video and questionnaire survey, this study has identified that the levels of satisfaction of drivers, e-motorcyclists, and cyclists are associated with the factors of traffic condition and lane characteristics among various shared lanes. Based on the analysis of data by a multinomial ordered logistic regression model, the major findings of this study are summarised as follows: (1) Satisfaction was mainly affected by lane width, lane number, lane type, and presence of parking space in the driver group. (2) Lane width, lane number, lane type, presence of parking space, speed, and lateral separation were the main factors in the e-motorcyclist group. (3) For the group of cyclists, lane width, lane number, presence of slope, presence of parking space, speed, and lateral separation were identified as the main factors. Our study will help local government officials to design more effective sustainable transport infrastructures.

The War of Legs

Transfers ◽  
2015 ◽  
Vol 5 (2) ◽  
pp. 102-120
Author(s):  
Michael Pesek
Keyword(s):  
World War I ◽  
Medical Care ◽  
East Africa ◽  
Transport Infrastructure ◽  
World War ◽  
East African ◽  
Colonial State ◽  
History Of ◽  
Main Factors ◽  
Belgian Congo

This article describes the little-known history of military labor and transport during the East African campaign of World War I. Based on sources from German, Belgian, and British archives and publications, it considers the issue of military transport and supply in the thick of war. Traditional histories of World War I tend to be those of battles, but what follows is a history of roads and footpaths. More than a million Africans served as porters for the troops. Many paid with their lives. The organization of military labor was a huge task for the colonial and military bureaucracies for which they were hardly prepared. However, the need to organize military transport eventually initiated a process of modernization of the colonial state in the Belgian Congo and British East Africa. This process was not without backlash or failure. The Germans lost their well-developed military transport infrastructure during the Allied offensive of 1916. The British and Belgians went to war with the question of transport unresolved. They were unable to recruit enough Africans for military labor, a situation made worse by failures in the supplies by porters of food and medical care. One of the main factors that contributed to the success of German forces was the Allies' failure in the “war of legs.”

scholarly journals Emulating Software-Defined Disaggregated Optical Networks in a Containerized Framework

2021 ◽  
Vol 11 (5) ◽  
pp. 2081
Author(s):  
Francisco-Javier Moreno-Muro ◽  
Miquel Garrich ◽  
Ignacio Iglesias-Castreño ◽  
Safaa Zahir ◽  
Pablo Pavón-Mariño
Keyword(s):  
Optical Networks ◽  
Transport Infrastructure ◽  
Optical Systems ◽  
Traffic Demand ◽  
Novel Approach ◽  
Infrastructure Project ◽  
Optical Layer ◽  
Optical Domain ◽  
Control And Management ◽  
Remote Communications

Telecom operators’ infrastructure is undergoing high pressure to keep the pace with the traffic demand generated by the societal need of remote communications, bandwidth-hungry applications, and the fulfilment of 5G requirements. Software-defined networking (SDN) entered in scene decoupling the data-plane forwarding actions from the control-plane decisions, hence boosting network programmability and innovation. Optical networks are also capitalizing on SDN benefits jointly with a disaggregation trend that holds the promise of overcoming traditional vendor-locked island limitations. In this work, we present our framework for disaggregated optical networks that leverages on SDN and container-based management for a realistic emulation of deployment scenarios. Our proposal relies on Kubernetes for the containers’ control and management, while employing the NETCONF protocol for the interaction with the light-weight software entities, i.e., agents, which govern the emulated optical devices. Remarkably, our agents’ structure relies on components that offer high versatility for accommodating the wide variety of components and systems in the optical domain. We showcase our proposal with the emulation of an 18-node European topology employing Cassini-compliant optical models, i.e., a state-of-the-art optical transponder proposed in the Telecom Infrastructure Project. The combination of our versatile framework based on containerized entities, the automatic creation of agents and the optical-layer characteristics represents a novel approach suitable for operationally complex carrier-grade transport infrastructure with SDN-based disaggregated optical systems.

scholarly journals Variable Speed Limit and Ramp Metering for Mixed Traffic Flows: A Review and Open Questions

2021 ◽  
Vol 11 (6) ◽  
pp. 2574
Author(s):  
Filip Vrbanić ◽  
Edouard Ivanjko ◽  
Krešimir Kušić ◽  
Dino Čakija
Keyword(s):  
Traffic Control ◽  
Ramp Metering ◽  
Transport Infrastructure ◽  
Control Algorithms ◽  
Speed Limit ◽  
Mixed Traffic ◽  
Traffic Flows ◽  
Variable Speed ◽  
Variable Speed Limit ◽  
Traffic Demand

The trend of increasing traffic demand is causing congestion on existing urban roads, including urban motorways, resulting in a decrease in Level of Service (LoS) and safety, and an increase in fuel consumption. Lack of space and non-compliance with cities’ sustainable urban plans prevent the expansion of new transport infrastructure in some urban areas. To alleviate the aforementioned problems, appropriate solutions come from the domain of Intelligent Transportation Systems by implementing traffic control services. Those services include Variable Speed Limit (VSL) and Ramp Metering (RM) for urban motorways. VSL reduces the speed of incoming vehicles to a bottleneck area, and RM limits the inflow through on-ramps. In addition, with the increasing development of Autonomous Vehicles (AVs) and Connected AVs (CAVs), new opportunities for traffic control are emerging. VSL and RM can reduce traffic congestion on urban motorways, especially so in the case of mixed traffic flows where AVs and CAVs can fully comply with the control system output. Currently, there is no existing overview of control algorithms and applications for VSL and RM in mixed traffic flows. Therefore, we present a comprehensive survey of VSL and RM control algorithms including the most recent reinforcement learning-based approaches. Best practices for mixed traffic flow control are summarized and new viewpoints and future research directions are presented, including an overview of the currently open research questions.

scholarly journals LOGISTICS CENTRES DEVELOPMENT IN LATVIA

Transport ◽  
2007 ◽  
Vol 22 (4) ◽  
pp. 241-246 ◽  
Author(s):  
Igor Kabashkin
Keyword(s):  
Spatial Planning ◽  
Economic Restructuring ◽  
Transport Infrastructure ◽  
Spatial Integration ◽  
Sustainable Transport ◽  
Integrated Networks ◽  
Logistics Systems ◽  
Logistics Networks ◽  
Communication Links ◽  
The Baltic

In the situation where a large increase in trade and freight transport volumes in the Baltic Sea region (BSR) is expected and in which the BSR is facing a major economic restructuring, efforts to achieve more integrated and sustainable transport and communication links within the BSR are needed. One of these efforts is the development of logistics centres (LCs) and their networking, which will continue to have an impact on improving communication links, spatial planning practices and approaches, logistics chain development and the promotion of sustainable transport modes. These factors will reflect on logistics processes both in major gateway cities and in remote BSR areas. The importance of logistics systems as a whole is not seen clearly enough. Logistics actors see that logistics operations are not appreciated as much as other fields of activity. In addition, logistics centres and the importance of logistics activities to the business life of areas and the employment rate should be brought up better. In the paper main goal and tasks of national approach to LCs development are discussed. Strategic focus of new activities in this area is on the integration of various networks within and between logistics centres in order to improve and develop the quality of logistics networks as well as to spatially widen the networking activities. The key objectives are to integrate the links between logistics centres, ports and other logistics operators in a functional and sustainable way, to promote spatial integration by creating sustainable and integrated approaches to spatial planning of logistics centres and transport infrastructure, to improve ICT‐based networking and communication practices of the fields of transport and logistics and to increase the competence of logistics centres and associated actors by organising educational and training events. The current activities include, for example, the creation of measures for transport networking and port modernisation, multimodal transport network strategies, integrated networks between ports, logistics centres and other operators, the better involvement of LCs in spatial planning and knowledge of the land use needs of the LCs, territorial impact assessments on selected transport corridors where logistics centres are located, the establishment of a common vision of the future spatial and environmental development along the transport corridors and LC‐areas, the elimination of bottlenecks in port‐hinterland‐LC connections, the integration of telematics supported logistics networks based on identification and analysis of networks.

scholarly journals Assessing Sustainable Mobility Measures Applying Multicriteria Decision Making Methods

2020 ◽  
Vol 12 (15) ◽  
pp. 6067 ◽  
Author(s):  
Jonas Damidavičius ◽  
Marija Burinskienė ◽  
Jurgita Antuchevičienė
Keyword(s):  
Decision Making ◽  
Positive Impact ◽  
Evaluation Model ◽  
Multicriteria Decision Making ◽  
Urban Transport ◽  
Transport Infrastructure ◽  
Transport Systems ◽  
Sustainable Transport ◽  
Sustainable Mobility ◽  
Multicriteria Decision

An increasing number of recent discussions have focused on the need for designing transport systems in consonance with the importance of the environment, thus promoting investment in the growth of non-motorized transport infrastructure. Under such conditions, the demand for implementing the most effective infrastructure measures has a profoundly positive impact, and requires the least possible financial and human resources. The development of the concept of sustainable mobility puts emphasis on the integrated planning of transport systems, and pays major attention to the expansion of non-motorized and public transport, and different sharing systems, as well as to effective traffic management involving intelligent transport systems. The development of transport infrastructure requires massive investment, and hence the proper use of mobility measures is one of the most important objectives for the rational planning of sustainable transport systems. To achieve this established goal, this article examines a compiled set of mobility measures and identifies the significance of the preferred tools, which involve sustainable mobility experts. The paper also applies multicriteria decision making methods in assessing urban transport systems and their potential in terms of sustainable mobility. Multicriteria decision making methods have been successfully used for assessing the effectiveness of sustainable transport systems, and for comparing them between cities. The proposed universal evaluation model is applied to similar types of cities. The article explores the adaptability of the model by assessing big Lithuanian cities.

scholarly journals Dual-Level Evaluation Framework for Airport User Satisfaction

2021 ◽  
Vol 12 (1) ◽  
pp. 17-30
Author(s):  
Dimitrios Dimitriou ◽  
Maria Sartzetaki ◽  
Iliana Kalenteridou
Keyword(s):  
Service Quality ◽  
User Satisfaction ◽  
Holistic Approach ◽  
Evaluation Framework ◽  
Transport Infrastructure ◽  
Level Of Service ◽  
Northern Greece ◽  
Modeling Framework ◽  
Traffic Demand ◽  
Satisfaction Evaluation

Passenger's satisfaction evaluation is very complicated for transport infrastructure services that accommodate high demand, mainly due to international passenger's quality attitudes, expectations, and experiences. This paper focuses on the development of the methodological framework to assessing level of service quality at airports, adopting two evaluation layers: the level of service (efficiency to manage traffic demand) and the level of expectation (performance to accommodate traveler's needs). The conceptual framework develops a holistic approach to evaluate overall level of service quality of an airport. A modeling framework then is developed to test the reliability of the level of quality and the consistency of airport level of service and level of passengers expectation. The methodology is applied in a small sized airport the Democritus Airport in Alexandroupolis, in Northern Greece. The analysis explores the passenger's satisfaction level for Greek regional airports and highlights the consistency of level of airport service and passenger's level of expectations.

scholarly journals FACTORS AFFECTING THE FORMATION AND DEVELOPMENT OF THE MULTIMODALINE TRANSPORT SYSTEM OF UKRAINE IN MODERN CONDITIONS

2020 ◽  
Vol 1 (46) ◽  
pp. 446-454
Author(s):  
Shyriaieva S ◽  
Keyword(s):  
Transport System ◽  
Information Provision ◽  
Legal Regulation ◽  
Transport Infrastructure ◽  
Transport Systems ◽  
Rolling Stock ◽  
Multimodal Transportation ◽  
Stage Of Development ◽  
Multimodal Transport ◽  
Main Factors

The article deals with the main factors influencing the formation and development of the multimodal transport system of Ukraine in modern conditions. The object of the research is the process of formation of the domestic multimodal transport system. The purpose of the work is to determine the necessary measures for the formation of the multimodal transport system of Ukraine. In Ukraine, multimodal transportation is at the initial stage of development. Among the main factors hindering the formation and development of multimodal transport systems in Ukraine, is the imperfection of regulatory legal regulation of multimodal transport issues; absence of own environmentally friendly rolling stock of different types of transport, especially on road transport, which carries out transportation on long distances; imbalance between levels of capacity of objects of multimodal transport infrastructure and volumes of cargo flows; high risks of multimodal carriers at significant distances with two or more modes of transport; political situation in Ukraine; information provision of all parts of the multimodal logistics chain, etc. To solve these problems, measures have been proposed that will allow the formation and development of the multimodal transport system of Ukraine. The results of the work can be applied for the formation of a national multimodal transport system. Foreseeable assumptions about the development of the research object - the study of the components of the multimodal transport system. KEYWORDS: MULTIMODAL TRANSPORTATION, MULTIMODALINE TRANSPORTATION SYSTEM

scholarly journals Traffic signal coordination control along oversaturated two-way arterials

2020 ◽  
Vol 6 ◽  
pp. e319
Author(s):  
Haitao Xu ◽  
Zuozhang Zhuo ◽  
Jing Chen ◽  
Xujian Fang
Keyword(s):  
Traffic Flow ◽  
Traffic Congestion ◽  
Control Method ◽  
Traffic Signal ◽  
Coordination Control ◽  
Minimization Method ◽  
Traffic Condition ◽  
Traffic Demand ◽  
Signal Coordination ◽  
Arterial Coordination

As an effective method to alleviate traffic congestion, traffic signal coordination control has been applied in many cities to manage queues and to regulate traffic flow under oversaturated traffic condition. However, the previous methods are usually based on two hypotheses. One is that traffic demand is constant. The other assumes that the velocity of vehicle is immutable when entering the downstream section. In the paper, we develop a novel traffic coordination control method to control the traffic flow along oversaturated two-way arterials without both these hypotheses. The method includes two modules: intersection coordination control and arterial coordination control. The green time plan for all intersections can be obtained by the module of intersection coordination control. The module of arterial coordination control can optimize offset plan for all intersections along oversaturated two-way arterials. The experiment results verify that the proposed method can effectively control the queue length under the oversaturated traffic state. In addition, the delay in this method can be decreased by 5.4% compared with the existing delay minimization method and 13.6% compared with the traffic coordination control method without offset optimization. Finally, the proposed method can balance the delay level of different links along oversaturated arterial, which can directly reflect the efficiency of the proposed method on the traffic coordination control under oversaturated traffic condition.

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