The mission of the FLOW project is to put walking and cycling on an equal footing with motorised modes by developing a user-friendly methodology to assess the effectiveness of walking and cycling measures in addressing urban road congestion. FLOW targets three main stakeholder groups: cities, businesses and decision-makers - with the aim of shifting the way these groups think about and act on the potential for non-motorised transport to reduce congestion. FLOW will communicate the project’s results through tailored materials for use by practitioners in each of these three key fields. FLOW partner cities will pilot an assessment tool that looks at the congestion impact of walking and cycling measures as well as improved transport modelling simulation tools. These will be used to develop implementation scenarios and action plans to add or upscale cycling and walking measures shown to reduce congestion.