Chemnitz in context: Street-network sprawl trends

Chemnitz in context

1.21.82.433.6<19751976–19901991–20052006–2020SNDi of street additions
1.21.82.433.6<19751976–19901991–20052006–2020SNDi of entire street network
ChemnitzSachsen (Region)Germany (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Chemnitz plotted against Sachsen and Germany. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Chemnitz's incremental SNDi rose from 2.15 to 2.53 between 1991-2005 and 2006-2020. In terms of the aggregate network, Chemnitz ranked 1st out of 4 cities in Sachsen and 14th out of 99 in Germany as of 2020.

New Street Additions (2006–2020)

SNDi value
2.53
Rank in Germany
37th of 99
Rank in Sachsen
1st of 4

Entire Network (Aggregate)

SNDi value
1.65
Rank in Germany
14th of 99
Rank in Sachsen
1st of 4

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

What about similarly populated cities?

12345<19751976–19901991–20052006–2020SNDi of street additions
12345<19751976–19901991–20052006–2020SNDi of entire street network
ChemnitzBongaigaonGaizhou

In new street additions, Chemnitz and Bongaigaon both built increasingly disconnected streets over time, while Gaizhou fluctuated in its street-construction patterns. For the full network, Chemnitz and Bongaigaon both became progressively more disconnected, while Gaizhou grew more disconnected from 1975 through 1976-1990, then improved.