Street space in cities is a rare resource. Much of it is currently allocated to highly space-consuming transport modes without taking into account that demands for that space vary over time. This report looks at how street space has typically been allocated in the past, examines the rationale for street space allocation and describes how to measure space consumption for mobility purposes. The study also explores by way of a simulation how new mobility services and travel modes interact when a limited, dynamic and demand-responsive re-allocation of street space is introduced in a mid-sized city.