Who Rules the Mobility Game?

Wies Callens is Policy Lead and Spokesperson at Fietsersbond, Belgium's largest cycling organisation. With nearly a decade of experience in cycling advocacy, he works at the intersection of evidence-based policy analysis and political engagement; across local, regional, federal, and European levels of government. At Fietsersbond, Wies leads policy development and public affairs, representing cyclists; interests in legislative processes and stakeholder dialogues from Brussels to the European Parliament. He is a regular voice in Belgian media on mobility, urban planning, and sustainable transport, and publishes a widely read cycling policy newsletter. Before joining Fietsersbond in 2016, Wies spent a decade in the cultural sector, developing transferable expertise in stakeholder engagement, advocacy, and organisational governance. His conviction: getting more people on bikes is not just good for cyclists; it is good for public health, liveable cities, and the climate. But it does not happen by itself.

Katja Diehl is an expert and role model for the mobility transition. She personifies the transition towards sustainable, people-centred transport concepts, demonstrating a clear vision and authentic commitment. Drawing on her experience as a advisor in the field of mobility, bestselling author, podcaster and speaker Katja possesses a unique perspective on the challenges and opportunities inherent in transforming towards a more accessible future.

Ediz Rehberg is Senior Public Policy Manager DACH at Voi Technology, where he works at the intersection of mobility, regulation and urban development. He focuses on shaping policy frameworks that enable shared mobility to contribute to more efficient and equitable use of public space. Prior to joining Voi, Ediz worked as a mobility consultant, developing data-driven mobility concepts for cities and real estate projects, and as a policy advisor in the Munich City Council on transport, environment and urban planning. He brings a strong understanding of how cities can transition towards more sustainable and people-centered mobility systems.

Katharina Schlittler is General Manager for Switzerland, Austria and Central Eastern Europe at Voi Technology, where she leads the expansion of shared micromobility across diverse urban markets. Since joining Voi in 2021, she has played a key role in shaping market strategies and working with cities to integrate shared mobility into existing transport systems. With a background in advisory at EY and active roles in organisations such as CHACOMO, the Touring Club Switzerland (TCS) as well as Women in Mobility, she brings a strong perspective on how urban space can be used more efficiently, sustainably and fairly.