SETA is heavily based on real world requirements and data. For this reason the project will implement use cases in three different but complementary metropolitan areas in Europe, all of which have extensive and intense mobility and transport issues: Birmingham, UK; Turin, Italy; Santander, Spain. These areas are complementary as they provide different social and technical challenges, as well as different mobility objectives and therefore will enable the definition of very comprehensive requirements as well as validation in very different situations. SETA will be able to cover such different, cross-border areas thanks to the participation of decision-makers and data providers, thus having access to large-scale tailored data and stakeholders for each area. Large scale information is already present at the partners’ sites. To this data we must add the data provided by The Floow: petabytes of second-by-second data about driving behaviour. The data is aggregated at geographic level and provides quasi real-time insight into motorised mobility with a granularity of 10m x 10m over entire countries (the largest majority of the data refers to the UK). The challenge of coping with such diverse and wide metropolitan areas will make portability in a short time and low cost a major requirement for the project.