Lab

Traffic, Transportation and Logistics Laboratory - TTLog


About the lab

The Traffic, Transportation and Logistics Laboratory (TTLog) (FEK 1203/B/23-06-2016) is a renaming of the Transport Engineering Laboratory, which was founded in 2005 and belongs to the Civil Engineering Department of the University of Thessaly. TTLog aims at the enforcement of the educational and research activities and the encouraging of close cooperation with other laboratories and research institutes.

Featured research (12)

The emergence of social media resulted in a high number of people using them. Their flexibility makes them more popular compared to conventional methods of information sharing. Transport-related information can be shared cost-efficiently and timely on platforms such as Facebook, Instagram, and Twitter. The shared content’s form can be a text, a photo, or a video enabling more accurate transport-related information. The main objective of this study is to investigate to what extent social media have an impact on the mobility choices of people, filling the gap of previous studies that paid little attention to the influence of social media on transport-related purposes. A systematic literature review was performed in SCOPUS database to identify any record that is related to social media and urban mobility. Only records with an important and relevant contribution to the topic were kept. In addition, a thorough review of transport-related social media accounts and content was performed to investigate their influence. Social media metrics such as reactions, comments and shares of posts are measured to determine the real influence of the accounts and their content. The analysis ends up with an appropriate scheme and form of a transport-related account and content that would be more influential in today’s social media landscape.
Crowdsourced deliveries or crowdshipping is identified in recent literature as an emerging urban freight transport solution, aiming at reducing delivery costs, congestion, and environmental impacts. By leveraging the pervasive use of mobile technology, crowdshipping is an emerging solution of the sharing economy in the transport domain, as parcels are delivered by commuters rather than corporations. The objective of this research is to evaluate the impacts of crowdshipping through alternative scenarios that consider various levels of demand and adoption by public transport users who act as crowdshippers, based on a case study example in the city of Volos, Greece. This is achieved through the establishment of a tailored evaluation framework and a city-scale urban freight traffic microsimulation model. Results show that crowdshipping has the potential to mitigate last-mile delivery impacts and effectively contribute to improving the system’s performance.
As the world becomes more urbanized, there is a strong need for urban public transport to provide sustainable alternative solutions against private-vehicle usage. However, the opportunities for seamless journeys through public transport are still limited and the need for properly designed and operated transport interchanges is vital. The present paper investigates the perceptions and the users' level of satisfaction when using the New Railway Station of Thessaloniki in Greece and the Riga International Coach Terminal in Latvia, in terms of services provision and station's operation. In total, 36 indicators were tested, grouped in eight quality factors, namely travel information, wayfinding information, time and movement, access, comfort and convenience, station attractiveness, safety and security and emergency situation handling. Attitudinal surveys were implemented to determine key performance factors that affect travelers' satisfaction when using the two terminals. Data were collected through on-line questionnaires and were elaborated through descriptive and inferential statistics, including Mann-Whitney two-sample U-testing to assess differences between the samples in variables measured on a 5-point Likert scale, Spearman bivariate correlations to measure the strength of association between the quality indicators and multiple regression analyses to examine the effect of selected attributes on the general satisfaction level of travelers. Results showed that both interchanges perform better in physical quality attributes, like access, travel and wayfinding information provision, but they do not satisfy users' aesthetics expectations in the internal and external area of the interchanges and the surrounding area and they do not cover adequately their feeling of security and safety in the transfer or waiting areas. These results highlighted the users' preferences and concerns which contribute into a satisfactory overall design of the interchanges. In a nutshell, transport interchange design should satisfy both providing a hub for seamless mobility, but also integrating the station as a part of the public realm.
Social media are deemed influential in making decisions and seeking advice. Due to their explosive growth as critical channels for information, their content can trigger a place visit, a change of transport mode or destination, or plans’ cancellation. The main objective of this paper is to investigate the influence of social media on users’ activity and mobility planning. Responses of 738 participants in a digital survey were used to formulate ordinal regression models. The developed models determine the contribution of users’ demographic characteristics, travel characteristics and social media usage to mobility decisions after using social media as a source of information. These decisions were expressed in two dependent variables; (i) the impact of social media use in activity and mobility planning; (ii) the impact of the proposed transport mode by social media information, on mode choice. Analysis of the results indicated that the models, which considered all the characteristics together, could better predict the two variables.
The assessment of smart logistics solutions performance is a complex process that takes into consideration the solution type, the stakeholders’ engagement level, and the cities’ particularities and objectives. It is performed taking into account specific evaluation criteria and indicators. This study aims to introduce a holistic sustainability-based framework for the assessment of logistics solutions based on Life Cycle Sustainability Analysis (LCSA) and multi stakeholder multi criteria decision making concept by considering four sustainability disciplines (economy, environment, mobility and society) and three enablers (solution maturity, user acceptance and user uptake). The followed process builds on data transparency and stakeholder communication, and enables decision making through aggregation of the analysis results. Evalog, an open platform, has been developed based on the framework concepts and is implemented to assess and cross-compare city logistics solutions that have been selected by twelve European city cases. The output of Evalog is the integration of all indicators in the Logistics Sustainability Index (LSI), which depicts the solution’s impact per stakeholder category and the Global LSI (GLSI), which represents the overall impact at city level. Results showed that an average improvement of 24.5% may be achieved in all criteria and city cases owing to the logistics solution.

Lab head

Eftihia Nathanail
Department
  • Τμήμα Πολιτικών Μηχανικών

Members (1)

Giannis Adamos
  • University of Thessaly
Danai Tzika-Kostopoulou
Danai Tzika-Kostopoulou
  • Not confirmed yet

Alumni (5)

Ioannis Karakikes
  • University of the Aegean
Maria Tsami
  • University of Macedonia
Konstantinos Papoutsis
  • University of Antwerp
Charalampos Petamidis
Charalampos Petamidis