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The paper deals with the definition of urban mobility, assuming that inside the city, the flow of mobility is deeply connected with the distribution, quality and use of the urban activities that “polarize” different users (residents, commuters, tourists and city users). In this vision, ICT assume a strategic role, but the need to reconsider their role emerges in respect to the concept of a smart city...
This paper presents a novel de-centralized cycle-free traffic signal controller that adapts to changes in traffic demand. Traffic signal timing optimization is achieved using a Nash Bargaining game-theoretic framework, where each phase is modeled as a player in a game in which the players cooperate to reach a mutual agreement. The Nash bargaining solution is applied to obtain the optimal control strategy,...
The Authorities that are responsible for the design and management of infrastructures have an increasing need of information and support in order to optimize their work, save money, time, and, sometimes (e.g., in case of disastrous events), lives. Technological development is leading to new possibilities, in terms of new technologies increasingly available, widespread, reliable and inexpensive and...
The purpose of this paper is to find a solution to plan the routing of vehicles, which deliver Hazardous Material (hazmat) on a road transport networks taking into account the minimization of travel costs, as well as individual and environmental risks. The proposed model is an application of label setting algorithm formulated as Multi-Objective Shortest Path (MOSP) problem with deterministic and min-max...
The effectiveness of Cooperative Intelligent Transport Systems (C-ITS), both on energy and emissions savings as well as operational improvements, is an on-going research area. This research evaluates the effect of a pilot study on speed advice service, which was implemented along a major urban arterial corridor in the city of Thessaloniki, Greece. Real-time data pertaining to the operation of the...
Recently there has been an enormous effort towards the development and field deployment of autonomous vehicles (AV). These developments have a direct impact on road traffic characteristics, as AV can also be used as sensors, actuators, and generally as effective components of an online traffic management system. In this work, we explore through microsimulation how AV can affect the network performance...
While safety is thoroughly applied to the development of transportation systems, one of the prominent challenges of the last years is the integration with security concepts, required by the ubiquitous connectivity and increased value in data. A joint safety/security design can expose sometimes to trade-offs, since safety and security requirements may not match perfectly or even be incompatible to...
The significant increase in the use of bike sharing systems (BSSs) causes imbalances in the distribution of bikes, creating logistical challenges and discouraging bike riders who find it difficult to pick up or drop off a bike at their desired location. We investigated this issue by finding the network-wide availability patterns and how these patterns evolve temporally using a novel supervised clustering...
The study of cyclist behavior for developing realistic and reliable behavioral models is attracting research focus. Achieving a detailed understanding of cyclist behavior is a cornerstone in building micro-simulation models and ultimately creating a more sustainable transportation system. Cyclist behavior is especially important at traffic intersections due to the exposure to turning and crossing...
The problem of measuring vehicle's weight-in-motion (WIM) and their classification is one of the research topics in field of transport telematics. It is important not only for development of intelligent systems used for planning and cargo fleet managing, but also for control of the legal use of transport infrastructure, for road surface protection from early destruction and for safety support on roads...
Bike Share Systems (BSSs) are emerging in many US cities as a new sustainable transportation mode that provides a last-mile solution for short-distance transfers between different private and public transportation modes. In order to encourage the increased use of bikes as a mode of transportation, tools, measures, and planning techniques similar to those used for other transportation modes need to...
The growing adoption of automated data collection systems in the transit industry, such as automated fare-collection (AFC) and automated vehicle location (AVL), is providing operators with extensive data about the state of the system and its usage by passengers. The paper proposes a framework for using automated data to support the various functions, both planning and real time, and demonstrates its...
The i.Drive Lab has developed inter-disciplinary methodology for the analysis and modelling of behavioral and physiological responses related to the interaction between driver, vehicle, infrastructure, and virtual environment. The present research outlines the development of a validation study for the combination of virtual and real-life research methodologies. i.Drive driving simulator was set up...
Transport infrastructure of cities faces big challenges when hosting major international sport events. At present within the context of the upcoming 2018 FIFA World Cup, municipal authorities are planning to build some new streets and modify road junctions in the city of Samara. The study aims to investigate the effect of these improvements on the transport situation in the city. To achieve this goal...
Ubiquitous real-time passenger information (URTPI) is state-of-the-art travel information for public transport passengers and an integral part of intelligent transport systems. URTPI enables travellers to access information before and during a journey. Passengers are offered information to make both pre-trip and en-route choices. The effectiveness of the information provision and the return on investments...
The introduction of taxi-like transit services operated by shared automated vehicles comes into sight with the development of vehicle automation. In this paper, the operation of such a service is simulated for a generic grid network in order to determine the impact of different relocation strategies for idle vehicles on passenger waiting time, empty mileage and parking needs. The tested strategies...
This study focuses on assessing the socio economic impact from investments in the field of cooperative Intelligent Transportation Systems (c-ITS) in Greece. For quantifying the impacts of c-ITS, a survey-based study was designed and executed. The questionnaire encompassed questions on: i. technology awareness, ii. general economic, environmental and system performance factors and threats, and iii...
Free-floating carsharing (FFC) has become an established mode of transport in many cities world-wide and may help to reduce private car ownership in densely populated urban areas. However, parking FFC vehicles in residential areas is often problematic and this reduces the overall attractiveness of such systems. In this paper, a simulation based assessment is proposed to evaluate the impact of designated...
In recent years, maritime freight transportation and the consequent handling of containers are among the most dynamic and growing sectors. The aim of this research is to propose a Decision Support System (DSS) addressed mainly to shipping companies, allowing the choice, even en-route, of the hub port of destination for the successive multi-modal operations. The companies make choices in relation both...
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