Public transport and sustainable mobility should be part of all policy areas. The development of sustainable urban mobility is reaching far beyond the transport sector. Many initiatives across a range of policy domains, including climate change, urbanisation, digitalisation, access to data, automation, social affairs, competition or accessibility have direct or indirect impacts on urban mobility and citizens’ daily travel behaviours. It is therefore crucially important to better understand and assess the positive impact of any new policy initiative on urban and regional mobility. #MobilityOnTop