Marios Sekadakis

Marios Sekadakis is a Civil – Transportation Engineer, Research Associate and PhD Candidate at the Department of Transportation Planning and Engineering at the School of Civil Engineering of the National Technical University of Athens (NTUA). In 2020, he graduated in Civil Engineering from the National Technical University of Athens (NTUA) majoring in Transportation Engineering. He has more than five years of experience in several aspects of road safety and traffic engineering. He has published 15 papers in scientific journals, 3 book chapters, and 16 papers in scientific conferences. He is actively contributing to the CCAM Association.

Specialization Areas

Road Safety
Traffic Engineering
Autonomous Vehicles
Human Machine Interface
Driving Behaviour
Data Analysis and Modeling

Education

Doctor of Philosophy (PhD) Candidate, (Dec 2021 – ongoing), at the Department of Transportation Planning and Engineering at the School of Civil Engineering of the National Technical University of Athens (NTUA), Topic: “Road safety and driving behaviour analysis of Automated Vehicles during level transitions”, Advisor: Prof. George Yannis
Diploma of Civil Engineering (Sep 2014 – Mar 2020) at the School of Civil Engineering of the National Technical University of Athens (NTUA), Specialization: Transport Engineering (Integrated Master), Graduation Grade: 7.77/10.00, Diploma Thesis: “Driving behaviour during texting and surfing in rural roads using a driving simulator”

Publications

Publications in Scientific Journals

Currently (July 2024), fifteen (15) papers have been published in scientific journals with peer review:

Sekadakis, M., Sousouni, I.M., Garefalakis, T., Oikonomou, M., Ziakopoulos, A., and Yannis, G., (2025). “Evaluating the Environmental and Safety Impacts of Eco-Driving in Urban and Highway Environments”. Sustainability. Special Issue: Sustainable Urban Mobility: Road Safety and Traffic Engineering, 17(6), 2762.
Sekadakis, M., Trösterer, S., Moertl, P., and Yannis, G., (2025). “Identifying driving profiles after take over request in automated vehicles at SAE levels 2 and 3”. Transportation Research Part F: Traffic Psychology and Behaviour. 111 May 2025, 250–263.
Oikonomou, M., Sekadakis, M., Katrakazas C., and Yannis, G. (2025). “Analyzing the safety effects of different operating speeds for an autonomous shuttle bus service’” Traffic Safety Research, 9, e000089.
Oikonomou, M., Orfanou F., Sekadakis, M., Pavlou D., and Yannis, G. (2025). “Examining the effects of texting, web surfing, and navigating apps on urban driving behavior and crash risk” Traffic Safety Research, 9, e000087.
Ziakopoulos, A., Sekadakis, M., Katrakazas, C., Kallidoni M., Michelaraki, E., and Yannis, G. (2023). “Explainable macroscopic and microscopic influences of COVID-19 on naturalistic driver aggressiveness derived from telematics through SHAP values of SVM and XGBoost algorithms” Journal of Safety Research, Vol. 93.
Sekadakis, M., Kallidoni, M., Katrakazas, C., Trösterer, S., Marx, C., Moertl, P., & Yannis, G. (2024). “The HADRIAN novel human – machine interface prototype for automated driving : safety and impact assessment” European Transport Research Review, 16, 64.
Ziakopoulos, A., Oikonomou, M., Sekadakis, M., and Yannis, G. (2024). “Safety evaluation via conflict classification during automated shuttle bus service operations” European Transport Research Review, 16 (1), 38.

Sekadakis, M., Katrakazas, C., Michelaraki, E., Ziakopoulos, A., and Yannis, G. (2023). “COVID-19 and Driving Behavior: Which Were the Most Crucial Influencing Factors?” Data Science for Transportation, Springer Nature, 5(3), 1–11.

Sekadakis, M., Katrakazas, C., Santuccio, E., Mörtl, P., & Yannis, G. (2022). “Risk factors linked with elderly , truck and office worker drivers : a literature review in light of automated driving”. Advances in Transportation Studies, Special Issue, Vol. 3, 95-108.
Michelaraki, E., Sekadakis, M., Katrakazas, C., Ziakopoulos, A., & Yannis, G. (2022). “One year of COVID-19: Impacts on safe driving behavior and policy recommendations”. Journal of Safety Research
Sekadakis, M., Katrakazas C., Michelaraki E., & Yannis G. (2022). “Driving Behavior and Its Correlation with COVID-19 Response Measures: A Neural Network Forecasting Analysis”. Journal of Transportation Engineering, Part A: Systems, Vol. 148, No. 10, August 2022
Sekadakis M., Katrakazas C., Orfanou F., Pavlou D., Oikonomou M., & Yannis G. (2022). “Impact of texting and web surfing on driving behaviour and safety in rural roads”. International Journal of Transportation Science and Technology.
Sekadakis M., Katrakazas C., Michelaraki E., Kehagia F., & Yannis G. (2021). “Analysis of the impact of COVID-19 on collisions, fatalities and injuries using time series forecasting: The case of Greece”. Accident Analysis & Prevention, Vol. 162, November 2021, 106391
Katrakazas C., Michelaraki E., Sekadakis M., Ziakopoulos A., Kontaxi A., Yannis G. (2021). “Identifying the impact of the COVID-19 pandemic on Driving Behavior using naturalistic driving data and time series forecasting”. Journal of Safety Research, Vol. 78, September 2021, Pages 189-202
Katrakazas C., Michelaraki E., Sekadakis M., Yannis G. (2020). “A descriptive analysis of the effect of the COVID-19 pandemic on driving behavior and road safety”. Transportation Research Interdisciplinary Perspectives, Vol. 7, September 2020, 100186

Publications in Scientific Books

Currently, three (3) chapters have been published in scientific books with peer review:

In “Shaping Automated Driving to Achieve Societal Mobility Needs: A Human-Systems Integration Approach”, 2024. Lecture Notes in Mobility, Springer Cham, editors: Peter Moertl, Bernhard Brandstaetter.
1. Moertl P., Ebinger N., Marx C., Solmaz S., Pilz C., Sarabia J., Diaz S., Sandoval M., Sekadakis M., and Letina S. (2024). “Results of Two Demonstrations of Holistic Solutions for Automated Vehicles to Increase Usefulness and Safety”
2. Trösterer S., Marx C., Ebinger N., Mirnig A., Jakus G., Sodnik J., Sarabia J., Sekadakis M., and Moertl P. (2024). “An Integrated Display of Fluid Human Systems Interactions”
In “Shared Mobility Revolution: Pioneering Autonomous Horizons”, 2024. Lecture Notes in Mobility, Springer Cham, editors: Henriette Cornet, Maria Gkemou.
3. Oikonomou M., Sekadakis M., Ziakopoulos A., Tengg A., and Yannis G. (2024). “Integrated traffic simulation developer suite for shared automated mobility”.

Publications in scientific conference proceedings (full papers with review)

Currently (July 2024), sixteen (16) papers have been published in scientific conference proceedings with peer review.

Sekadakis M., Trösterer S., Moertl P., Yannis G. (2024). “Examining Factors Affecting Takeover Time in Automated Driving using Machine Learning Algorithms”, at the 30th ITS World Congress, Dubai, UAE (16-20 September 2024).
Sekadakis M., Kallidoni M., Katrakazas C., Trösterer S., Marx C., Moertl P., Yannis G. (2024). “The HADRIAN Novel Human-Machine Interface Prototype for Automated Driving: Safety and Impact Assessment”, at the Transport Research Arena (TRA) 2024, Dublin, Ireland (15-18 April 2024).
Ziakopoulos A., Oikonomou M., Sekadakis M., Yannis G. (2024). “Safety evaluation via conflict classification during automated shuttle bus service operations”, at the Transport Research Arena (TRA) 2024, Dublin, Ireland (15-18 April 2024).
Oikonomou M., Ziakopoulos A., Sekadakis M., Yannis G. (2023). “Correlations of automated mobility conditions with traffic conflict types”, at the ITS2023: Intelligent Systems And Consciousness Society, Patras, Greece (2-3 November 2023).
Oikonomou M., Sekadakis M., Katrakazas C., Goñi A. A., Lattarulo A. R., Yannis G. (2023). “Impacts of automated driving vehicles on bus depot operation using naturalistic data”, at the 11^th International Congress On Transportation Research (ICTR), Heraklion, Greece (20-22 September 2023).
Sekadakis M., Kallidoni M., Katrakazas C., Trösterer S., Marx C., Moertl P., Yannis G. (2023). “Impact Assessment of a novel Human-Machine Interface Prototype: A descriptive analysis from the HADRIAN project”, at the 11^th International Congress On Transportation Research (ICTR), Heraklion, Greece (20-22 September 2023).
Oikonomou M., Sekadakis M., Katrakazas C., Yannis G. (2023). “Safety impacts of autonomous shuttle bus with different operational speeds towards increasing market penetration rate of connected and automated vehicles”, at the 102^nd Transportation Research Board (TRB) Annual Meeting, Washington, D.C. (8-12 January 2023).
Sekadakis M., Katrakazas C., Clement P., Prueggler A., Yannis G. (2022). “Safety and impact assessment for seamless interactions through human-machine interfaces: indicators and practical considerations”, at the Transport Research Arena (TRA) 2022, Lisbon, Portugal (14-17 November 2022). Published: Transportation Research Procedia, Vol. 72, 2023, Pages 2425-2432
Oikonomou M., Sekadakis M., Katrakazas C., Hillebrand, J., Vlahogianni, E., Yannis G. (2022). “Traffic & environmental impact assessment under distinct operational speeds for automated shuttle bus services”, at the Transport Research Arena (TRA) 2022, Lisbon, Portugal (14-17 November 2022). Published: Transportation Research Procedia, Vol. 72, 2023, Pages 517-524
Moertl P., Santuccio E., Solmaz S., Kabbani T., Hartavi A. E., Katrakazas C., Sekadakis M., Zhang H., Letina S. (2022). “Trustworthy Automated Driving through Increased Predictability: A Field-Test for Integrating Road Infrastructure, Vehicle, and the Human Driver”, at the Transport Research Arena (TRA) 2022, Lisbon, Portugal (14-17 November 2022). Published: Transportation Research Procedia, Vol. 72, 2023, Pages 650-657
Katrakazas C., Michelaraki E., Sekadakis M., Chaziris A., Yannis G. (2022). “Was average speed affected by the COVID-19 response measures? Findings from Athens, Greece”, at the Transport Research Arena (TRA) 2022, Lisbon, Portugal (14-17 November 2022). Published: Transportation Research Procedia, Vol. 72, 2023, Pages 3212-3219
Sekadakis M., Katrakazas C., Michelaraki E., Ziakopoulos A., Yannis G. (2022). “Identifying crucial factors of the impact of COVID-19 on driving behaviour using feature analysis on naturalistic driving data”, at the 8^th Road Safety and Digitization, Athens, Greece (8-10 June 2022).
Sekadakis M., Katrakazas C., Santuccio E., Mörtl P., Yannis G. (2022). “A review of risk factors associated with elderly, truck and office worker drivers for automated driving applications”, at the 8^th Road Safety and Digitization, Athens, Greece (8-10 June 2022).
Sekadakis M., Katrakazas C., Santuccio E., Mörtl P., Yannis G. (2021). “Key Performance Indicators for safe fluid interactions within automated vehicles”, at the 10th International Congress On Transportation Research (ICTR), Rhodes, Greece (1-3 September 2021).
Oikonomou M., Sekadakis M., Katrakazas C., Ziakopoulos A., Vlahogianni E., Yannis G. (2021). “Identifying KPIs for the safety assessment of autonomous vehicles through traffic microsimulation”, at the 10th International Congress On Transportation Research (ICTR), Rhodes, Greece (1-3 September 2021).
Michelaraki E., Sekadakis M., Katrakazas C., Ziakopoulos A., Yannis G. (2021). “A four-country comparative overview of the impact of COVID-19 on traffic safety behavior”, at the 10th International Congress On Transportation Research, Rhodes (ICTR), Greece (1-3 September 2021).

Presentations in Scientific Conferences and Seminars

Currently (July 2024), twenty eifht (28) presentations have been made in scientific conferences and seminars.

Sekadakis M., Ziakopoulos A., Oikonomou M., Yannis G. (2024). “Impacts of Automated Shuttles on Traffic Safety: Findings from the SHOW project”, at the ECTRI Thematic Group Safety Meeting organized by ECTRI, Athens (27 November 2024).
Sekadakis M., Trösterer S., Moertl P., Yannis G. (2024). “Examining Factors Affecting Takeover Time in Automated Driving using Machine Learning Algorithms”, at the 30th ITS World Congress, Dubai, UAE (16-20 September 2024).
Sekadakis M., Kallidoni M., Katrakazas C., Trösterer S., Marx C., Moertl P., Yannis G. (2024). “The HADRIAN Novel Human-Machine Interface Prototype for Automated Driving: Safety and Impact Assessment”, at the Transport Research Arena (TRA) 2024, Dublin, Ireland (15-18 April 2024).
Ziakopoulos A., Oikonomou M., Sekadakis M., Yannis G. (2024). “Safety evaluation via conflict classification during automated shuttle bus service operations”, at the Transport Research Arena (TRA) 2024, Dublin, Ireland (15-18 April 2024).
Oikonomou M., Ziakopoulos A., Sekadakis M., Yannis G. (2023). “Correlations of automated mobility conditions with traffic conflict types”, at the ITS2023: Intelligent Systems And Consciousness Society, Patras, Greece (2-3 November 2023).
Oikonomou M., Sekadakis M., Katrakazas C., Goñi A. A., Lattarulo A. R., Yannis G. (2023). “Impacts of automated driving vehicles on bus depot operation using naturalistic data”, at the 11^th International Congress On Transportation Research (ICTR), Heraklion, Greece (20-22 September 2023).
Sekadakis M., Kallidoni M., Katrakazas C., Trösterer S., Marx C., Moertl P., Yannis G. (2023). “Impact Assessment of a novel Human-Machine Interface Prototype: A descriptive analysis from the HADRIAN project”, at the 11^th International Congress On Transportation Research (ICTR), Heraklion, Greece (20-22 September 2023).
Sekadakis M., Katrakazas C., Kallidoni M., Yannis, G., “The HADRIAN project: Holistic Approach for Driver Role Integration and Automation Allocation for European Mobility Needs”, at the Road Safety Research Challenges Workshop, NTUA, Athens, Greece (19 May 2023).
Oikonomou M., Sekadakis M., Ziakopoulos A., Katrakazas C., Yannis, G., “Shared Automation Operating Models for Worldwide Adoption – SHOW”, at the Road Safety Research Challenges Workshop, NTUA, Athens, Greece (19 May 2023).
Sekadakis M., Katrakazas C., Kallidoni M., Yannis, G., “HADRIAN Safety and Impact Assessment”, at the EU HADRIAN final event, Graz, Austria (9-10 May 2023).
Sekadakis M., Michelaraki E., Katrakazas C., Ziakopoulos A., Yannis, G., “Investigating the impact of COVID-19 pandemic on driver behaviour through telematics data”, at the Telematics and Driver Behaviour Workshop, NTUA, Athens, Greece (4 April 2023).
Oikonomou M., Sekadakis M., Katrakazas C., Yannis G. (2023). “Safety impacts of autonomous shuttle bus with different operational speeds towards increasing market penetration rate of connected and automated vehicles”, at the 102^nd Transportation Research Board (TRB) Annual Meeting, Washington, D.C. (8-12 January 2023).
Sekadakis M., Katrakazas C., Clement P., Prueggler A., Yannis G. (2022). “Safety and impact assessment for seamless interactions through human-machine interfaces: indicators and practical considerations”, at the Transport Research Arena (TRA) 2022, Lisbon, Portugal (14-17 November 2022).
Oikonomou M., Sekadakis M., Katrakazas C., Hillebrand, J., Vlahogianni, E., Yannis G. (2022). “Traffic & environmental impact assessment under distinct operational speeds for automated shuttle bus services”, at the Transport Research Arena (TRA) 2022, Lisbon, Portugal (14-17 November 2022).
Moertl P., Santuccio E., Solmaz S., Kabbani T., Hartavi A. E., Katrakazas C., Sekadakis M., Zhang H., Letina S. (2022). “Trustworthy Automated Driving through Increased Predictability: A Field-Test for Integrating Road Infrastructure, Vehicle, and the Human Driver”, at the Transport Research Arena (TRA) 2022, Lisbon, Portugal (14-17 November 2022).
Katrakazas C., Michelaraki E., Sekadakis M., Chaziris A., Yannis G. (2022). “Was average speed affected by the COVID-19 response measures? Findings from Athens, Greece”, at the Transport Research Arena (TRA) 2022, Lisbon, Portugal (14-17 November 2022).
Sekadakis M., Katrakazas C., Michelaraki E., Ziakopoulos A., Yannis G. (2022). “Identifying crucial factors of the impact of COVID-19 on driving behaviour using feature analysis on naturalistic driving data”, at the 8^th Road Safety and Digitization, Athens, Greece (8-10 June 2022).
Sekadakis M., Katrakazas C., Santuccio E., Mörtl P., Yannis G. (2022). “A review of risk factors associated with elderly, truck and office worker drivers for automated driving applications”, at the 8^th Road Safety and Digitization, Athens, Greece (8-10 June 2022).
Sekadakis M., Katrakazas C., Santuccio E., Mörtl P., Yannis G. (2021). “Key Performance Indicators for safe fluid interactions within automated vehicles”, at the 10th International Congress On Transportation Research (ICTR), Rhodes, Greece (1-3 September 2021).
Oikonomou M., Sekadakis M., Katrakazas C., Ziakopoulos A., Vlahogianni E., Yannis G. (2021). “Identifying KPIs for the safety assessment of autonomous vehicles through traffic microsimulation”, at the 10th International Congress On Transportation Research (ICTR), Rhodes, Greece (1-3 September 2021).
Michelaraki E., Sekadakis M., Katrakazas C., Ziakopoulos A., Yannis G. (2021). “A four-country comparative overview of the impact of COVID-19 on traffic safety behavior”, at the 10th International Congress On Transportation Research (ICTR), Rhodes, Greece (1-3 September 2021).
Katrakazas C., Michelaraki E., Sekadakis M., Kallidoni M., Pigadioti D., Yannis G. (2021) “Key factors of COVID-19 impact on mobility and safety”, at the 29^th Annual Conference of the Research Institute of Human Factors in Road Safety, Virtual Conference (8 July 2021)
Oikonomou M., Katrakazas C., Sekadakis M., Yannis G. (2021). “SHared automation Operating models for Worldwide adoption”, at the Innovation in Road Safety Research Workshop, National Technical University of Athens (20 May 2021).
Sekadakis M., Katrakazas C., Yannis G. (2021). “Holistic Approach for Driver Role Integration and Automation Allocation”, at the Innovation in Road Safety Research Workshop, National Technical University of Athens (20 May 2021).
Michelaraki E., Katrakazas C., Sekadakis M., Yannis G. (2021). “COVID-19 impact on mobility and safety”, at the Innovation in Road Safety Research Workshop, National Technical University of Athens (20 May 2021).
Yannis G., Katrakazas C., Michelaraki E., Sekadakis M., Ziakopoulos A., Kontaxi A. (2021). “Impact of COVID-19 on driver behaviour in Greece and selected countries”, at the 6^th at the RSGB Joining the Dots Virtual Conference (2-3 March 2021).
Yannis G., Katrakazas C., Michelaraki E., Sekadakis M., Ziakopoulos A., Kontaxi A. (2020). “Impact of COVID-19 on traffic safety behavior in Greece and worldwide”, at the ECTRI TG Safety Meeting, (30 November 2020).
Yannis G., Katrakazas C., Michelaraki E., Sekadakis M., Ziakopoulos A., Kontaxi A. (2020). “Impact of COVID-19 on traffic safety behavior in Greece and worldwide” at the 31^st Virtual Meeting of the International Safety Data and Analysis Group (IRTAD), (22 October 2020).

Academic Experience

Supervising the progress of 9 Diploma Theses at the School of Civil Engineering, NTUA (2023-ongoing)

Research projects

Participation in two (2) research project in the field of Transportation Planning and Engineering, assigned by the European Commission:

HADRIAN: “Holistic Approach for Driver Role Integration and Automation Allocation for European Mobility Needs” of the Horizons 2020 framework programme on transport research of the European Commission (2020-2023)
- - NTUA led and supervised the successful execution of safety and impact assessments for a range of innovations in automated driving throughout the project, focusing on Human-Machine Interface (HMI), level transitions, and take-over responses.
SHOW: “SHared automation Operating models for Worldwide adoption” of the Horizons 2020 framework programme on transport research of the European Commission (2020-2024)
- - - NTUA led the safety assessment of automated driving across the innovative SHOW pilot sites in over 20 EU cities. In addition to this leadership, NTUA supported by simulating automated shuttles at the Madrid Mega site and developing an inclusive simulation suite tool. NTUA further contributed by creating a Policy Support Tool (PST) to aid various pilot sites.

Professional Experience

Transportation Engineering Internship at ”Hellenic Civil Aviation Authority” (Jun – Jul 2019). Specialisation areas: airport pavement design, construction, maintenance, and airside design (EASA, FAA & ICAO regulations)

Awards

Awarded a Ph.D. fellowship funding by the Hellenic Foundation for Research and Innovation (H.F.R.I.) in 2023 for “Engineering Sciences & Technology” Scientific Area, among the 4^th Call for H.F.R.I. Scholarships for PHD Candidates.
NTUA Thomaideio Award for 2023 publications: awarded paper “COVID-19 and Driving Behavior: Which Were the Most Crucial Influencing Factors?” in the Data Science for Transportation Journal.
NTUA Thomaideio Award for 2022 publications: awarded paper “Risk factors linked with elderly, truck and office worker drivers: a literature review in light of automated driving” in the Advances in Transportation Studies Journal.
NTUA Thomaideio Award for 2021 publications: awarded paper “Analysis of the impact of COVID-19 on collisions, fatalities and injuries using time series forecasting: The case of Greece” in the Accident Analysis & Prevention Journal.
NTUA Thomaideio Award for 2020 publications: awarded paper “A descriptive analysis of the effect of the COVID-19 pandemic on driving behavior and road safety” in the Transportation Research Interdisciplinary Perspectives Journal.

Software Knowledge and Technical Skills

Programming: R, Matlab
Statistical Analysis: SPSS
Traffic Simulation: Aimsun Next and API development
Design: Autodesk AutoCAD (2D & 3D), Autodesk Civil3D, Autodesk InfraWorks, Tekla BIMsight
Pavement Design: COMFAA
Geographic Information System: GIS (ArcGIS, QGIS)
General: Microsoft Office, Microsoft Windows

Languages