Abstract
Some cities start with strong political leadership, some cities flounder without it. Others rely on data but are unable to meaningfully use it to affect change. What is the most important evidence to collect to achieve change? What do decision makers really need to know to set the right course for the road ahead? How do we deal with contested data stories? This is about choosing the data and evidence to support the policy vision from the perspective of cities. We bring together experts in computers science, big data, and sustainable mobility together to discuss the future direction of decision making in our cities. Practices from the GreenCharge project in data collection and simulation will be shared, as well as from opportunities from the Google Insights Explorer in the wider mobility context, and we will explore the real needs of city practitioners and their aspirations for the future.