Julia Jarass from the Institute of Transport Research at the Deutsches Zentrum für Luft- und Raumfahrt (DLR) explained in an interview with the radio station RBB Kultur the current challenges in the implementation of the Berlin Mobility Law with a special focus on walking as a mode of transport.
Sophia Becker was interviewed by RiffReporter (27 August 2019): A free public transport ticket for all is superfluous.