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Research into collecting and measuring reliable, accurate, and naturalistic microscopic traffic data is a fundamental aspect in road network planning scientific literature. The vehicle trajectory is one of the main variables in traffic flow theory that allows to extract information regarding microscopic traffic flow characteristics. Several methods and techniques have been applied regarding the acquisition of vehicle trajectory. The forthcoming applications of intelligent transport systems on vehicles and infrastructure require sufficient and innovative tools to calibrate existing models on more complex situations. Unmanned aerial vehicles (UAVs) are one of the most emerging technologies being used recently in the transportation field to monitor and analyze the traffic flow. The aim of this paper is to examine the use of UAVs as a tool for microscopic traffic data collection and analysis. A comprehensive guiding framework for accurate and cost-effective naturalistic traffic surveys and analysis using UAVs is proposed and presented in detail. Field experiments of acquiring vehicle trajectories on two multilane roundabouts were carried out following the proposed framework. Results of the experiment indicate the usefulness of the UAVs technology on various traffic analysis studies. The results of this study provide a practical guide regarding vehicle trajectory acquirement using UAVs.
Apostolos Anagnostopoulos; Fotini Kehagia. Utilizing UAVs Technology on Microscopic Traffic Naturalistic Data Acquirement. Infrastructures 2021, 6, 89 .
AMA StyleApostolos Anagnostopoulos, Fotini Kehagia. Utilizing UAVs Technology on Microscopic Traffic Naturalistic Data Acquirement. Infrastructures. 2021; 6 (6):89.
Chicago/Turabian StyleApostolos Anagnostopoulos; Fotini Kehagia. 2021. "Utilizing UAVs Technology on Microscopic Traffic Naturalistic Data Acquirement." Infrastructures 6, no. 6: 89.
Mobility is the lifeblood of society, critical to economic and human development
Fotini Kehagia. The Transition to a Low-Carbon Smart Mobility in a Sociotechnical Context. Sustainability 2021, 13, 6222 .
AMA StyleFotini Kehagia. The Transition to a Low-Carbon Smart Mobility in a Sociotechnical Context. Sustainability. 2021; 13 (11):6222.
Chicago/Turabian StyleFotini Kehagia. 2021. "The Transition to a Low-Carbon Smart Mobility in a Sociotechnical Context." Sustainability 13, no. 11: 6222.
Road safety comparison between countries can be used to identify where there is potential for safety improvements. The main subject of this study includes the descriptive comparison between the Greece and Palestine (West Bank) in terms of road safety situation expressed by mortalities rates and factors of drivers involved in these accidents. Specifically, the difference of the number of traffic accidents was examined based on variety classifications of drivers in terms of gender and age categories based on authorised data during the period (2012–2017). The presented study is a part of a general comparative analysis of the road safety performance between the two countries in the framework of a PhD research. Most of the accidents data records collected from Hellenic Statistical Authority for Greece and from the Palestinian Traffic Police for Palestine. In addition to the stage of data analysis, which included descriptive analysis, statistical tests for each part separately and comparison between the two countries were presented. Countries’ differences in structure and culture not only have an impact on the size and nature of road safety problems but they are also influencing the possibilities to reduce the problem effectively and efficiently.
Jameel Al-Karablieh; Fotini Kehagia. Road safety profile of Greece and Palestine. Journal of King Saud University - Engineering Sciences 2021, 1 .
AMA StyleJameel Al-Karablieh, Fotini Kehagia. Road safety profile of Greece and Palestine. Journal of King Saud University - Engineering Sciences. 2021; ():1.
Chicago/Turabian StyleJameel Al-Karablieh; Fotini Kehagia. 2021. "Road safety profile of Greece and Palestine." Journal of King Saud University - Engineering Sciences , no. : 1.
The COVID-19 pandemic that erupted in early 2020 has affected the everyday life, the practices, and the perceptions of the global population significantly. The aim of this paper is to investigate the perceptions, experiences, and practices of the active population regarding everyday urban life (working conditions, mobility, urban space, etc.) in the context of the first wave of the pandemic, by focusing on people who live and work in Greek cities. The data were collected using a structured questionnaire addressed to an active population. The majority of respondents declared that their personal and family lives were affected by the lockdown, with significant effects on their professional life and economic activities. Stress and fear were two feelings that increased. As far as mobility was concerned, the majority of respondents were unwilling to change their commuting practices. Although most of our findings presented a homogenous distribution in our sample, some changes in perceptions, experiences, and practices were correlated with the gender, age, and family status of the respondents. The results of the analysis provide useful information to policy makers and show that it is necessary to radically rethink aspects of urban space and urban mobility, in relation to the multiple problems and dynamics of the active population.
Fereniki Vatavali; Zoi Gareiou; Fotini Kehagia; Efthimios Zervas. Impact of COVID-19 on Urban Everyday Life in Greece. Perceptions, Experiences and Practices of the Active Population. Sustainability 2020, 12, 9410 .
AMA StyleFereniki Vatavali, Zoi Gareiou, Fotini Kehagia, Efthimios Zervas. Impact of COVID-19 on Urban Everyday Life in Greece. Perceptions, Experiences and Practices of the Active Population. Sustainability. 2020; 12 (22):9410.
Chicago/Turabian StyleFereniki Vatavali; Zoi Gareiou; Fotini Kehagia; Efthimios Zervas. 2020. "Impact of COVID-19 on Urban Everyday Life in Greece. Perceptions, Experiences and Practices of the Active Population." Sustainability 12, no. 22: 9410.
The Driver Behavior Questionnaire is one of the most widely used instruments for measuring self-reported driving behaviors. The aim of this research is to conduct a comparative analysis of driving behavior based on the results of the AUTh Driver Questionnaire (ADQ) in a representative sample of drivers in Greece and Palestine (West Bank). ADQ was created in order to find a new comprehensive form which includes several aspects relating the attitudes of drivers and evaluating their driving performance. Data on a range of attitudes towards road safety were collected using an online survey. A total of 830 responses were obtained for each country. The Questionnaire consists of two main divisions; the first section includes information regarding socio-demographic information of drivers in terms of gender, age category, level of education, etc. and the second section comprised of 50 questions relating characteristics of drivers’ behavior. The data analysis included of two main parts: descriptive analysis and factor analysis, which comprises of exploratory factor analysis (EFA) and confirmatory factor analysis (CFA). Through EFA; the criteria used to determine the number of factors were the Kaiser criterion of eigenvalues over 1.0, the Cattell Scree plot, parallel analysis, and the interpretability of factors. The analysis resulted eleven and eight factors had eigenvalues over 1.0 in Greece and Palestine samples respectively. The results of the study highlight the differences in the drivers’ behavior indicating differences in national culture and the commitment of drivers to traffic regulations.
Jameel Al-Karablieh; Fotini Kehagia. Comparison of Driver’s Behavior in Greece and Palestine (West Bank). Advances in Intelligent Systems and Computing 2020, 923 -934.
AMA StyleJameel Al-Karablieh, Fotini Kehagia. Comparison of Driver’s Behavior in Greece and Palestine (West Bank). Advances in Intelligent Systems and Computing. 2020; ():923-934.
Chicago/Turabian StyleJameel Al-Karablieh; Fotini Kehagia. 2020. "Comparison of Driver’s Behavior in Greece and Palestine (West Bank)." Advances in Intelligent Systems and Computing , no. : 923-934.
Low-carbon transport is a priority in addressing climate change. Transport is still almost totally dependent on fossil fuels (96%) and accounts for almost 60% of global oil use. Sustainable transport systems, both passenger and freight, should be economically and technically feasible, but also low-carbon and environmentally friendly. The calculation of greenhouse gas emissions in transport projects is becoming a primary target of transport companies as a part of an endeavor for low-carbon strategies to reduce the energy demand and environmental impact. This paper investigates the CO2 impact of construction and operation of the main highway and railway line infrastructure in Greece, which connects Athens and Thessaloniki, the capital and the second biggest city in Greece respectively and provides a comparative analysis in roadway and railway transport.
Diamanto Mintzia; Fotini Kehagia; Anastasios Tsakalidis; Efthimios Zervas. A Methodological Framework for the Comparative Analysis of the Environmental Performance of Roadway and Railway Transport. Promet - Traffic&Transportation 2018, 30, 721 -731.
AMA StyleDiamanto Mintzia, Fotini Kehagia, Anastasios Tsakalidis, Efthimios Zervas. A Methodological Framework for the Comparative Analysis of the Environmental Performance of Roadway and Railway Transport. Promet - Traffic&Transportation. 2018; 30 (6):721-731.
Chicago/Turabian StyleDiamanto Mintzia; Fotini Kehagia; Anastasios Tsakalidis; Efthimios Zervas. 2018. "A Methodological Framework for the Comparative Analysis of the Environmental Performance of Roadway and Railway Transport." Promet - Traffic&Transportation 30, no. 6: 721-731.
The purpose of the paper is the comparative assessment of the carbon dioxide (CO2) emissions footprint caused by vehicular traffic on the area of affected roads of the new Athens Metro Line 4A during the first year of operation phase. Two scenarios examined comparatively for CO2 emissions, with a time horizon of 2030: first scenario concerns the project not being implemented (Scenario 0) and the second scenario concerns the project being implemented (Scenario 1). The results of the calculations for the year 2030 were be examined comparatively with the year 2016, which is considered as the current situation. The composition of the traffic volume on the affected road network of Line 4 of the Metro is analyzed based on data collected by Attiko Metro Company.
Aristidis Giakoumis; Fotini Kehagia; Efthimios Zervas. Assessment of CO2 Footprint of the New Athens Metro Line 4 during the Operation Phase. Advances in Intelligent Systems and Computing 2018, 338 -345.
AMA StyleAristidis Giakoumis, Fotini Kehagia, Efthimios Zervas. Assessment of CO2 Footprint of the New Athens Metro Line 4 during the Operation Phase. Advances in Intelligent Systems and Computing. 2018; ():338-345.
Chicago/Turabian StyleAristidis Giakoumis; Fotini Kehagia; Efthimios Zervas. 2018. "Assessment of CO2 Footprint of the New Athens Metro Line 4 during the Operation Phase." Advances in Intelligent Systems and Computing , no. : 338-345.
Modern roundabouts are a type of intersection which is used successfully in many countries globally due to their advantages. More specifically, it is widely accepted that owing to their geometrical and operational characteristics the roundabouts enhance traffic capacity, cause an important reduction in delays and improve the road safety levels, for the benefit of the users. Moreover, their formation assures not only financial benefits, but environmental too, compared to other junction types, like signalized intersections. The engineering society launches research projects to develop guidelines for the assessment of such facilities in order to improve them. As a result, the concepts of level and quality of service have been introduced. The Level of Service (LoS) evaluates the traffic handling ability of a transportation facility and it is estimated by the use of specific techniques. The Quality of Service (QoS) assesses the performance of a transportation facility, as the drivers and the users perceive it. In this paper, the meaning of Quality of Service (QoS) of roundabouts is examined. A questionnaire’ s survey aimed at collecting data from users in Greece, regarding the factors that affect drivers’ satisfaction, during their driving through a roundabout. The results of the survey show that the quality of service perception on urban and rural roundabouts is influenced by several factors, such as the clarity of road signs, the presence of on-street parking, the lightning etc.
Efterpi Damaskou; Ioannis Karagiotas; Maria Perpinia; Fotini Kehagia. Assessment of Drivers’ Perception of Quality of Service on Urban Roundabouts. Advances in Intelligent Systems and Computing 2018, 104 -111.
AMA StyleEfterpi Damaskou, Ioannis Karagiotas, Maria Perpinia, Fotini Kehagia. Assessment of Drivers’ Perception of Quality of Service on Urban Roundabouts. Advances in Intelligent Systems and Computing. 2018; ():104-111.
Chicago/Turabian StyleEfterpi Damaskou; Ioannis Karagiotas; Maria Perpinia; Fotini Kehagia. 2018. "Assessment of Drivers’ Perception of Quality of Service on Urban Roundabouts." Advances in Intelligent Systems and Computing , no. : 104-111.
Anastasios Mouratidis; Fotini Kehagia. Feasibility of interchange construction projects along motorways. Road and Rail Infrastructure V 2018, 1 .
AMA StyleAnastasios Mouratidis, Fotini Kehagia. Feasibility of interchange construction projects along motorways. Road and Rail Infrastructure V. 2018; ():1.
Chicago/Turabian StyleAnastasios Mouratidis; Fotini Kehagia. 2018. "Feasibility of interchange construction projects along motorways." Road and Rail Infrastructure V , no. : 1.
The EU’s long-term outlook for transport in the EU and its associated emissions demonstrates that the 2050 decarbonization goals for the transport sector require not only incremental changes but a systematic change (EEA Transitions towards a more sustainable mobility system. EEA technical report, Copenhagen, 2016). The intensive problems that many urban areas are facing caused by the operation of the transport system such as traffic congestion, air pollution, degradation of the environment, etc. require a paradigm shift in the planning process. Banister (Transp. Policy 15:73–80, 2008) said that “transport planning has a crisis of identity and its future is uncertain, particularly as the increasing complexity of cities and societies make simple approaches to analysis, which views transport congestion as the problem and transport as the solution”. Transport should have a basic role in achieving sustainable development. Towards this direction sustainable urban transport planning is a challenge.
Fotini Kehagia. Sustainable Mobility. Dynamics of Disasters 2017, 99 -119.
AMA StyleFotini Kehagia. Sustainable Mobility. Dynamics of Disasters. 2017; ():99-119.
Chicago/Turabian StyleFotini Kehagia. 2017. "Sustainable Mobility." Dynamics of Disasters , no. : 99-119.
Man’s tendency to move began millennia ago, satisfying a basic need for food, shelter, clothing or social interaction. The uncertain path of road construction through the centuries is set forth by the primitive and everlasting need for mobility, trade and communication. In the era of engineering, and mostly technological boost, highways of the fourth generation ensure safe, fast and easy driving. It is difficult to discern deficiencies or drawbacks in the layout of a motorway of the fourth generation. However, weak points still exist. Vehicles moving on motorways consume energy and produce negative impact to the environment either by emissions or by noise. Despite the performance of the motorway, passengers still get trapped on routes by adverse climatic conditions and, even more, by pile-up accidents. The overall challenge for the fifth generation is to provide convincing ideas to handle effectively all these issues. In this article, the history of road from earliest times to the present, from the first to the fifth generation, is presented. The different factors that have influenced the design, development, construction and operation are examined. Moreover, new challenges to be faced and addressed by the roads of fifth generation are presented.
Anastasios Mouratidis; Fotini Kehagia. On the Track of Road Evolution. Journal of Infrastructure Development 2014, 6, 1 -15.
AMA StyleAnastasios Mouratidis, Fotini Kehagia. On the Track of Road Evolution. Journal of Infrastructure Development. 2014; 6 (1):1-15.
Chicago/Turabian StyleAnastasios Mouratidis; Fotini Kehagia. 2014. "On the Track of Road Evolution." Journal of Infrastructure Development 6, no. 1: 1-15.
In Greece more than 60,000 tn End of Life Tires are stockpiled every year often uncontrollable, causing severe environmental and other socio-economic negative impacts. Studies up to date are focused mainly on mechanical and physical characteristics of rubberized mixtures (based on cement, asphalt or soil) in which tire rubber is used either as alternative to natural aggregates or as additive. However, effect of tire rubber on noise reduction in rubberized bituminous layers, which is the main topic of present paper, has not been widely studied. In particular, this research paper is dealing with a sustainable use of tire rubber in asphalt pavement, leading to its generated noise reduction. An experimental pilot application has been conducted in the frame of a European Research Project, which has been implemented in a heavy traffic road section, cited outside Lamia city of Greece, (Vasilikon Street). The upper surface layer of the pavement has been made of rubberized bituminous mixture, produced by the wet process. Rheological characteristics of rubberized bitumen as well as basic properties of the implemented, rubberized bituminous mixture are presented. Moreover, measurements of noise level, deriving from vehicles’ motion, under operational conditions took place at the road section right after its implementation as well as after 8 months of its operation, while all data are presented in details. Results of the measurements on conventional and modified pavement sections are compared, certifying that rubberized asphalt layers can be not only environmentally friendly—since a category of solid wastes (worn automobile tires) is utilized—but also, addition of tire rubber particles in bituminous binder provides up to 3dB noise reducing bituminous mixtures and pavements, noise reduction that remains even after 8 months of road section’s operation.
Fotini Kehagia; Sofia Mavridou. Noise Reduction in Pavement Made of Rubberized Bituminous Top Layer. Open Journal of Civil Engineering 2014, 04, 198 -208.
AMA StyleFotini Kehagia, Sofia Mavridou. Noise Reduction in Pavement Made of Rubberized Bituminous Top Layer. Open Journal of Civil Engineering. 2014; 04 (03):198-208.
Chicago/Turabian StyleFotini Kehagia; Sofia Mavridou. 2014. "Noise Reduction in Pavement Made of Rubberized Bituminous Top Layer." Open Journal of Civil Engineering 04, no. 03: 198-208.
Fotini Kehagia; Anastasios Mouratidis. Living in the Shadow of the Motorway: Safety and Maintenance on the “Old” National Road Network. Procedia - Social and Behavioral Sciences 2012, 48, 2179 -2189.
AMA StyleFotini Kehagia, Anastasios Mouratidis. Living in the Shadow of the Motorway: Safety and Maintenance on the “Old” National Road Network. Procedia - Social and Behavioral Sciences. 2012; 48 ():2179-2189.
Chicago/Turabian StyleFotini Kehagia; Anastasios Mouratidis. 2012. "Living in the Shadow of the Motorway: Safety and Maintenance on the “Old” National Road Network." Procedia - Social and Behavioral Sciences 48, no. : 2179-2189.