The World Road Association (PIARC) organised with great success the XXVIIth World Road Congress, which was held on 2-6 October 2023, in Prague. The theme of the congress was “Together on the road again” and provided a unique opportunity to discuss in depth all subjects related to road infrastructures and road transport, with safety being one of the Congress key topics. The program included ministerial sessions, 60 technical sessions covering all key aspects and topics of road infrastructure, valuable poster sessions, various specialised workshops and foresight sessions.  A special workshop on “Boosting Sustainable Road Safety Solutions in LMICs” was also foreseen.  NTUA actively contributed with the following presentations: