Stuttgart in context: Street-network sprawl trends

Stuttgart in context

22.42.83.2<19751976–19901991–20052006–2020SNDi of street additions
22.42.83.2<19751976–19901991–20052006–2020SNDi of entire street network
StuttgartBaden-Wurttemberg (Region)Germany (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Stuttgart plotted against Baden-Württemberg and Germany. The SNDi of new construction in Stuttgart peaked in 1976-1990, compared to Baden-Württemberg which followed a zig-zag trend with an overall increase and Germany which rose steadily. Most recently, Stuttgart's incremental SNDi fell from 3.19 to 3.15 between 1991-2005 and 2006-2020. In terms of the aggregate network, Stuttgart ranked 13th out of 15 cities in Baden-Württemberg and 72nd out of 99 in Germany as of 2020.

New Street Additions (2006–2020)

SNDi value
3.15
Rank in Germany
72nd of 99
Rank in Baden-Württemberg
13th of 15

Entire Network (Aggregate)

SNDi value
2.23
Rank in Germany
72nd of 99
Rank in Baden-Württemberg
13th of 15

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

What about similarly populated cities?

22.42.83.2<19751976–19901991–20052006–2020SNDi of street additions
22.42.83.2<19751976–19901991–20052006–2020SNDi of entire street network
StuttgartArequipaFushun

In new street additions, Stuttgart and Arequipa both built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Fushun built increasingly disconnected streets from 1975 through 1991-2005, then improved. For the full network, Stuttgart and Fushun both became progressively more disconnected, while Arequipa grew more disconnected from 1975 through 1976-1990, then improved.