Case Study

SSB Flex 2.0

Stuttgart, Germany



Use Case

General transportation, Commuting, Evenings and weekends


11 Mercedes vans (increasing to 30)


of trips include at least two passengers


fewer vehicle km traveled as of May 2021


metric tons of CO2 saved


Stuttgart, Germany, the country’s sixth-largest city, has a high volume of private cars on its roads and frequently struggles with high levels of air pollution. Looking to improve this situation, Stuttgarter Straßenbahnen AG (SSB), the city’s public transport operator, launched an on-demand service in 2018. In order to significantly expand and upgrade the offering, the SSB partnered with Via in 2021 to replace the previous provider.


SSB Flex 2.0 provides city-wide transit coverage at times and in places where traditional public transport falls short. 

The service runs with an 11 vehicle fleet, and rides can be booked through an app or by phone in German or English. The new rider app that was introduced by Via has enhanced functionalities for the visually impaired and allows for smooth communication between riders and drivers. Additionally, the revamped service launched with a multimodal and intermodal integration, allowing riders to see within the app all transit options available in the city.  Via’s advanced technology allowed it to migrate data from a previous provider and enable a smooth system transition in just a few weeks.

With the on-demand service, we want to make a further contribution to public services in Stuttgart in order to motivate even more people to switch from motorized individual transport to more climate-friendly public offers."

Mario Laube
SSB Chief Financial Officer

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