Plenoria organized with great success the 50th International Road Conference (CESTE 2026) which took place in Zagreb, Croatia on 17-20 March 2026. This Event was thematically related to strategic planning, construction and maintenance of road network development, traffic safety, development and implementation of IT systems in the function of traffic management, innovations in the field of traffic signaling and equipment, new technologies in road construction and maintenance, plans of sustainable urban mobility and environmental protection, possibilities of using funds, and smart infrastructure management in cities – “Smart city”.