SIGINFRA
Institutional research project of the Josip Juraj Strossmayer University of Osijek, Faculty of Civil Engineering and Architecture Osijek
Safety aspects of urban transport infrastructure (SigINFRA)
Project Holder: Faculty of Civil Engineering and Architecture Osijek
Project Manager: Prof. Irena Ištoka Otković, PhD
Project Summary
Safety aspects of urban transport infrastructure and engineering structures are an important factor in analyses during all project and operational phases. This aspect includes planning, designing, and maintaining roads, bridges, and other systems, structures, and equipment in order to reduce the risk of accidents and improve traffic efficiency.
The first work package includes the planning of new or the reconstruction of existing infrastructure solutions. By applying microsimulation traffic modeling and professional tools, an analysis of the impact of planned interventions on the safety aspects of vehicle, pedestrian, and cyclist traffic flows and their conflicts will be developed.
The second work package will involve the application of non-destructive methods in assessing the condition of pavement structures of urban traffic surfaces, with a special emphasis on the application of the Ground Penetrating Radar method both in project identification, detection of utility infrastructure positions, and in assessing the success of reconstruction.
The third work package will deal with the safety aspects of engineering structures, such as bridges, and will include the assessment of the condition of structures and their sensitivity to vibrations by promoting a holistic approach to assessing bridge behavior. Within the project, methodologies for assessing the safety aspects of transport infrastructure will be developed, which will be applied and verified on selected case studies. By applying statistical tools and artificial intelligence tools, prediction models and identification and analysis of influencing factors on the safety aspects of urban transport infrastructure and structures will be developed.
PROJECT TEAM
Prof. Irena Ištoka Otković, PhD
Full Professor, Faculty of Civil Engineering and Architecture Osijek
Project Manager
Prof. Damir Varevac, PhD
tenured full professor, Faculty of Civil Engineering and Architecture Osijek
Project Associate
Prof. Ivica Guljaš, PhD
tenured full professor, Faculty of Civil Engineering and Architecture Osijek
Project collaborator
Prof. Damir Markulak, PhD
tenured full professor, Faculty of Civil Engineering and Architecture Osijek
Project collaborator
Prof. Sanja Dimter, PhD
tenured full professor, Faculty of Civil Engineering and Architecture Osijek
Project collaborator
Prof. Aleksandra Deluka-Tibljaš, PhD
Tenured Full Professor, Faculty of Civil Engineering, University of Rijeka
External collaborator on the Project
Assoc. Prof. Jurko Zovkić, Ph.D.
Associate Professor, Faculty of Civil Engineering and Architecture Osijek
Project collaborator
Ivan Hausman
B.Sc. in Traffic Engineering, Head of the Traffic Department, City of Osijek
External collaborator on the Project
External collaborators
Assoc. Prof. Aleksandar Jurić, PhD
Associate Professor, Faculty of Civil Engineering and Architecture Osijek
Project collaborator
Mirjana Šimunović
univ.mag.ing.aedif., Pinos inženjering d.o.o. Osijek, PhD student
External collaborator on the Project
Assoc. Prof. Tihomir Dokšanović, PhD
Associate Professor, Faculty of Civil Engineering and Architecture Osijek
Project collaborator
PROJECT RESULTS
Klobučar, M.; Šurdonja, S.; Deluka-Tibljaš, A.; Ištoka Otković, I. Application of the SSAM in the Safety Analysis of Combined Roundabout and Signalized Intersections Under Different Traffic Conditions. Sustainability 2026, 18, 1321.
Ištoka Otković, Irena; Klobučar, Mirna; Šurdonja, Sanja; Deluka-Tibljaš, Aleksandra
Conflict modeling using microsimulation and SSAM models // Put plus, 2026/27 (2026), 1; 254-263
Ištoka Otković, Irena; Deluka-Tibljaš, Aleksandra; Kraljević, Lidija; Štefić, Anamarija
English language knowledge influencing the choice of mobility mode when abroad: a case study //
Tehnički glasnik, 20 (2026), 3; 448-456.
Šimunović, Mirjana; Ištoka Otković, Irena
Assessment of the impact of traffic signalization on the behavior of vulnerable road users // Road and
Rail Infrastructure IX, Proceedings of the Conference CETRA 2026 / Lakušić, Stjepan; Vranešić, Katarina
(eds.). Zagreb: University of Zagreb Faculty of Civil Engineering Department of Transportation, 2026. pp.
1045-1052.
Ištoka Otković, Irena; Lisko, Katarina; Deluka-Tibljaš, Aleksandra; Šurdonja, Sanja; Klobučar, Mirna
Application of microsimulations in assessing the impact of a garage on the functional and safety
characteristics of an intersection // Road and Rail Infrastructure IX, Proceedings of the Conference CETRA
2026 / Lakušić, Stjepan; Vranešić, Katarina (eds.). Zagreb: University of Zagreb Faculty of Civil Engineering
Department of Transportation, 2026. pp. 1421-1428.
Klobučar, Mirna; Deluka-Tibljaš, Aleksandra; Šurdonja, Sanja; Ištoka Otković, Irena; Cuculić, Marijana
Urban roundabouts near signalised intersections: Review and preliminary microsimulation findings //
Road and Rail Infrastructure IX, Proceedings of the Conference CETRA 2026 / Lakušić, Stjepan; Vranešić,
Katarina (eds.). Zagreb: University of Zagreb Faculty of Civil Engineering Department of Transportation,
2026. pp. 1391-1397.
Šurdonja, Sanja; Klobučar, Mirna; Deluka-Tibljaš, Aleksandra; Ištoka Otković, Irena
Optimization of Roundabout Geometry Based on Measured and Simulated Operating Speeds // Road and
Rail Infrastructure IX, Proceedings of the Conference CETRA 2026 / Lakušić, Stjepan; Vranešić, Katarina
(eds.). Zagreb: University of Zagreb Faculty of Civil Engineering Department of Transportation, 2026. pp.
1331-1338.
Klobučar, Mirna; Deluka-Tibljaš, Aleksandra; Šurdonja, Sanja; Ištoka Otković, Irena
Traffic Flow Analysis of Closely Spaced Roundabouts and Signalized Intersections // Computational
Science and Its Applications – ICCSA 2026 Workshops / Gervasi, Osvaldo; Murgante, Beniamino; Garau,
Chiara et al. (eds.). Cham: Springer Cham, 2026. pp. 338-350.
Ištoka Otković, I., Klobučar, M., Deluka-Tibljaš, A., & Šurdonja, S. (2026). EVALUATING THE EFFECTS OF
SIGNALIZED INTERSECTIONS ON THE ROUNDABOUT SAFETY AND CAPACITY: A CASE STUDY FROM OSIJEK.
Journal of Road and Traffic Engineering, 72(5), 197-204.