Koblenz in context: Street-network sprawl trends

Koblenz in context

2.43.244.8<19751976–19901991–20052006–2020SNDi of street additions
2.43.244.8<19751976–19901991–20052006–2020SNDi of entire street network
KoblenzRheinland-Pfalz (Region)Germany (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Koblenz plotted against Rheinland-Pfalz and Germany. The SNDi of new construction in Koblenz peaked in 1991-2005, compared to Rheinland-Pfalz which followed a zig-zag trend with an overall increase and Germany which rose steadily. Most recently, Koblenz's incremental SNDi fell from 4.7 to 3.98 between 1991-2005 and 2006-2020. In terms of the aggregate network, Koblenz ranked 3rd out of 4 cities in Rheinland-Pfalz and 97th out of 99 in Germany as of 2020.

New Street Additions (2006–2020)

SNDi value
3.98
Rank in Germany
91st of 99
Rank in Rheinland-Pfalz
3rd of 4

Entire Network (Aggregate)

SNDi value
3.65
Rank in Germany
97th of 99
Rank in Rheinland-Pfalz
3rd of 4

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

What about similarly populated cities?

369<19751976–19901991–20052006–2020SNDi of street additions
369<19751976–19901991–20052006–2020SNDi of entire street network
KoblenzBaffaEnschede

In new street additions, Koblenz and Enschede both built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Baffa fluctuated in its street-construction patterns. For the full network, Koblenz and Enschede both became progressively more disconnected, while Baffa became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards.