Germany's "Green" City (with more bikes than cars!)

Freiburg im Breisgau has become a European benchmark for sustainable city life by making trams and cycling—not cars—the default way to move. The city pairs a dense, pedestrian-friendly core with extensive bicycle networks and a tram system that runs on priority signals and separated track segments, helping keep streets calm while still supporting everyday mobility. The result is visible in daily life: students and families cycle widely, trams thread through the center, and the old town’s streets feel lively without being dominated by traffic.

A key reason Freiburg looks the way it does is political and planning choices made across decades, not a single “green” moment. In 1972 the city voted to preserve its tram network, and it later expanded that network through the 1980s and 1990s while many other European cities dismantled theirs. That decision helped shape the city’s growth pattern: the center was pedestrianized starting in 1973, and once cars were pushed out, the area evolved into a functioning business district with an active market that still anchors the cathedral square. Environmental pressure also mattered—protests in the 1970s helped keep development compact and protected the neighboring Black Forest.

Freiburg’s postwar rebuilding adds another layer. While much of the city was destroyed in World War II, the reconstruction of the core aimed to restore the historic street fabric rather than rebuild for automobiles. Much of what visitors see in the old town is therefore relatively recent—under 75 years old—but it retains the look and feel of earlier Freiburg. Outside the center, however, car-oriented planning left scars: the “Ring Road” replaced a narrower street lined with beer gardens and restaurants, and some neighborhoods still reflect the 1960s-era push to destroy older streets to make room for roads.

The city’s sustainability story extends beyond mobility into housing and energy. In the early 2000s, Vauban—built on a former military base—was designed for high energy efficiency, with solar panels common on roofs and balconies. Many residents live in housing cooperatives or social housing, and car ownership has fallen over time: after the tram line opened in 2006, the city reports only about 170 motor vehicles per 1,000 inhabitants. Vauban also uses modal filters to keep cars out of many walking and cycling routes, creating safer streets for children; some streets are designated as play streets.

Even with clear strengths, Freiburg isn’t portrayed as perfect. Some bicycle infrastructure remains less protected than it could be—especially at major intersections—so there are still opportunities to upgrade safety. Still, the tram network is framed as the city’s most powerful asset: Freiburg even uses a distinct term for trams (“Stadtbahn”), emphasizing separated tracks, traffic-light priority, and higher average speeds. Planning rules reinforce the system by requiring new housing to be within walking distance of tram lines.

Overall, Freiburg’s model is presented as replicable: a compact city, prioritized transit, and street designs that make everyday life safer and more pleasant. Urban planners from across Europe visit to study it, and the city’s influence is positioned as a practical path toward more human-scaled development—one that reduces reliance on wide roads and car-first infrastructure while keeping mobility efficient for everyone.