POLIS, the European Cities Network, organised with great success the 2021 Annual Polis Conference, which took place on 1-2 December 2021 in Gothenburg, Sweden. The Conference provided an opportunity for cities and regions to showcase their transport achievements to a large audience of mobility experts, practitioners and decision makers. With a focus on innovation, sustainability and co-creation, Gothenburg hosted one of Europe’s most dynamic clusters within the field of mobility and safety.  pdf5 NTUA actively contributed with the following presentation: