Pforzheim in context: Street-network sprawl trends

Pforzheim in context

1.82.433.6<19751976–19901991–20052006–2020SNDi of street additions
1.82.433.6<19751976–19901991–20052006–2020SNDi of entire street network
PforzheimBaden-Wurttemberg (Region)Germany (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Pforzheim plotted against Baden-Württemberg and Germany. While Baden-Württemberg and Germany both rose steadily, Pforzheim's new street additions rose steadily. Most recently, Pforzheim's incremental SNDi rose from 2.17 to 2.64 between 1991-2005 and 2006-2020. In terms of the aggregate network, Pforzheim ranked 5th out of 15 cities in Baden-Württemberg and 18th out of 99 in Germany as of 2020.

New Street Additions (2006–2020)

SNDi value
2.64
Rank in Germany
45th of 99
Rank in Baden-Württemberg
9th of 15

Entire Network (Aggregate)

SNDi value
1.73
Rank in Germany
18th of 99
Rank in Baden-Württemberg
5th of 15

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

What about similarly populated cities?

2468<19751976–19901991–20052006–2020SNDi of street additions
2468<19751976–19901991–20052006–2020SNDi of entire street network
PforzheimNankangKarimpur

In new street additions, Pforzheim and Nankang both built increasingly disconnected streets over time, while Karimpur built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns. For the full network, Pforzheim and Nankang both became progressively more disconnected, while Karimpur became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards. Pforzheim and Nankang have been growing further apart in their street-network character since 1975.