Tübingen in context: Street-network sprawl trends

Tubingen in context

22.533.5<19751976–19901991–20052006–2020SNDi of street additions
22.533.5<19751976–19901991–20052006–2020SNDi of entire street network
TubingenBaden-Wurttemberg (Region)Germany (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Tübingen plotted against Baden-Württemberg and Germany. The SNDi of new construction in Tübingen peaked in 1991-2005, compared to Baden-Württemberg which followed a zig-zag trend with an overall increase and Germany which rose steadily. Most recently, Tübingen's incremental SNDi fell from 3.17 to 2.94 between 1991-2005 and 2006-2020. In terms of the aggregate network, Tübingen ranked 10th out of 15 cities in Baden-Württemberg and 47th out of 99 in Germany as of 2020.

New Street Additions (2006–2020)

SNDi value
2.94
Rank in Germany
56th of 99
Rank in Baden-Württemberg
10th of 15

Entire Network (Aggregate)

SNDi value
1.96
Rank in Germany
47th of 99
Rank in Baden-Württemberg
10th of 15

Rankings go from most connected to most disconnected — rank 1 is the most connected.

What about similarly populated cities?

1.62.43.24<19751976–19901991–20052006–2020SNDi of street additions
1.62.43.24<19751976–19901991–20052006–2020SNDi of entire street network
TubingenChicago HeightsSakhile

In new street additions, Tübingen and Chicago Heights both built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Sakhile built increasingly disconnected streets over time. For the full street network, though, all three cities follow the same trend. Tübingen and Sakhile have been growing further apart in their street-network character since 1975.