Large scale deployment of C-ITS: Impact assessment results of the C-Roads Greece pilots

This paper aims to provide insights related to the impact assessment and evaluation results from the use of CITS services in the Greek pilot of the CRoads Greece project, i.e., Attica Tollway and Egnatia Odos Tollway. The impact assessment and evaluation of the CITS services includes aspects related to user acceptance, real world pilot logs collected from the two pilots, and simulation experiments that were conducted for the impact assessment of the CITS services. The paper concludes with a roadmap and guidelines for the extended deployment of CITS services in the Greek highway and urban road networks.Comment: 18 page

Urban logistics pooling viability analysis via a multicriteria multiactor method

Collaborative transportation and logistics pooling are relatively new concepts in research, but are very popular in practice. In the last years, collaborative transportation seems a good city logistics alternative to classical urban consolidation centres, but it is still in a development stage. This paper proposes a framework for urban logistics pooling ex-ante evaluation. This framework is developed with two purposes. The first is to generate comparable contrasted or progressive scenarios representing realistic situations; the second to simulate and assess them to make a "before-after" comparative analysis. In this framework, a demand generation model is combined with a route optimization algorithm to simulate the resulting routes of the proposed individual or collaborative distribution schemes assumed by each scenario. Then, several indicators can be obtained, mainly travelled distances, working times, road occupancy rates and operational monetary costs. To illustrate that framework, several scenarios for the urban area of Lyon (France) are simulated and discussed to illustrate the proposed framework possible applications. Document type: Part of book or chapter of boo

Recent Developments on Security and Privacy of V2V & V2I Communications: A Literature Review

In the recent years Intelligent Transportation Systems and associated technologies have progressed significantly, including services based on wireless communications between vehicles (V2V) and infrastructure (V2I). In order to increase the trustworthiness of these communications, and convince drivers to adopt the new technologies, specific security and privacy requirements need to be addressed, using Vehicular Ad Hoc Networks (VANETs). To maintain VANET′s security and eliminate possible attacks, mechanisms are to be developed. In this paper, previous researches are reviewed aiming to provide information concerning matches between an attack and a solution in a VANET environment

CTMaaS: An innovative platform for C-ITS-enabled dynamic Traffic and Fleet Management as a Service

Fleet management systems have been one of the most important research fields in transportation science. Nowadays the enhancement of fleet management systems with technologies such as the Cooperative Intelligent Transport System (CITS) that allows fleets to communicate with their environment, with other vehicles or with the road infrastructure, resulting in safer and more efficient road travel. This paper aims to present the CTMaaS platform, a tool which integrates CITS services and traffic management processes to manage vehicle fleets. Starting with a literature review, the paper presents various fleet management systems, that have been developed in the last years, and the most typical CITS services. The next chapters present the CTMaaS platform, use cases, and methodology.Comment: 11 page

All you need is data: the added value of National Access Points as backbone European ITS data exchange infrastructures

Intelligent Transport Systems are crucial in the digital transformation of transportation. The EC mandates the establishment of National Access Points (NAPs) in each Member State, serving as common national interfaces for ITS data exchange. While progress has been made in standardizing NAP data, integration with operational ITS practices remain limited. This paper presents five NAP use cases from the NAPCORE (National Access Point Coordination Organization for Europe) CEF funded project. The first one outlines a National Virtual Traffic Management Center offering real time visualized KPIs supporting motorway traffic operations. The second focuses on NAP enabled Cooperative ITS and dynamic traffic management services. Next use case involves a Pan European interface, providing visualizations of data availability. The fourth use case enhances the digitization of traffic management plans, among different TMC. Finally, the fifth use case demonstrates a technical interface combining NAP traffic data with meteorological information for KPIs on extreme weather impacts on traffic.Comment: 6 page

Prerequisites for Further Deploying ITS Systems: The Case of Greece

The deployment of Intelligent Transport Systems (ITS) is a strategic decision for the European Union (EU). Through the integration of ITS in their transportation national strategy, the EU Member States can move decisively towards the achievement of the targets that have been set for a cleaner, safer and more efficient transport system. Moreover, the adoption of systems and services, that have been developed in other countries, and their induction in the national ITS frameworks can facilitate the interoperable and coordinated deployment of ITS and ensure the effort for the targets’ achievement. This paper examines the possibilities of transferring in Greece the knowledge gained by three systems which have been developed in other three South East Europe (SEE) countries and defines guidelines for their future deployment in Greece

A review on climate change adaptation policies for the transportation sector

Climate change related disasters and extreme weather events are expected to significantly increase the risk of damages on networks, systems and assets. In view of these anticipated adverse effects, growing attention is placed on adaptation measures, in the form of preventive actions aiming to minimize induced hazards’ negative impacts and to enhance the cross-sectorial resilience. The transportation sector is no stranger to this regime. Within this paper, a detailed desktop, literature and case-study review approach is adopted in order to identify transport-related adaptation measures and actions that are taken at a global and European level. Findings from national and international activities, along with relevant policies and strategies stemming from relevant organizations (IPCC, Bridging the Gap, etc.) are reviewed in terms of their hitherto and expected contribution in efficiently addressing climate change. In addition, proposed actions are clustered in terms of content (technical measures, ICT, legislative, etc.). In this way, the transferability and applicability of case-specific experiences throughout the world are highlighted through the consolidation of a common knowledge base regarding adaptation measures in the transportation sector. Findings are formulated in the form of an adaptation toolbox that can provide the basis for an improved decision making approach for different end-user for addressing climate change

A review on climate change adaptation policies for the transportation sector

Climate change related disasters and extreme weather events are expected to significantly increase the risk of damages on networks, systems and assets. In view of these anticipated adverse effects, growing attention is placed on adaptation measures, in the form of preventive actions aiming to minimize induced hazards’ negative impacts and to enhance the cross-sectorial resilience. The transportation sector is no stranger to this regime. Within this paper, a detailed desktop, literature and case-study review approach is adopted in order to identify transport-related adaptation measures and actions that are taken at a global and European level. Findings from national and international activities, along with relevant policies and strategies stemming from relevant organizations (IPCC, Bridging the Gap, etc.) are reviewed in terms of their hitherto and expected contribution in efficiently addressing climate change. In addition, proposed actions are clustered in terms of content (technical measures, ICT, legislative, etc.). In this way, the transferability and applicability of case-specific experiences throughout the world are highlighted through the consolidation of a common knowledge base regarding adaptation measures in the transportation sector. Findings are formulated in the form of an adaptation toolbox that can provide the basis for an improved decision making approach for different end-user for addressing climate change

Vulnerability of transport infrastructure to extreme weather events in small rural catchments

Across the Mediterranean region, extreme weather events (EWE), such as high-intensity storms causing flooding in small river basins, are one of the most common types of hydrometeorological hazards. Flooding has been associated with severe effects on road networks and a significant number of vehicle-related fatalities, raising concerns regarding the performance of transportation infrastructure during EWEs. Given the expected increase in frequency of such events within the context of climate change, an assessment of its vulnerability is particularly crucial. The work presented herein evaluates the performance of transportation infrastructure during high-intensity storms. This research focuses on small rural catchments, examining the impact of five extreme storm events in five rural basins in Greece. Post-flood surveys were conducted, to record the impact of inundation on each infrastructure element in the five catchments. Overall, findings showed that road infrastructure, especially river crossings, performed poorly, restricting access to large areas during and after the events, affecting the safety of commuters and sustaining extensive damages. On average, it was found that 73% of the river crossings and 11.5% of the total length of the road network were inundated or damaged, while a total of 12 individuals died during the events. The results revealed that the impact of flooding in the transportation infrastructure of small rural basins was severe and a threat to human life. The findings of this study indicate that authorities should consider taking measures during EWEs, reexamine the safety features of the relevant infrastructure and assess the risk related to its failure