Hildesheim in context: Street-network sprawl trends

Hildesheim 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
HildesheimNiedersachsen (Region)Germany (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Hildesheim plotted against Niedersachsen and Germany. The SNDi of new construction in Hildesheim peaked in 1991-2005, compared to Niedersachsen which rose steadily and Germany which rose steadily. Most recently, Hildesheim's incremental SNDi fell from 3.02 to 2.77 between 1991-2005 and 2006-2020. In terms of the aggregate network, Hildesheim ranked 3rd out of 9 cities in Niedersachsen and 28th out of 99 in Germany as of 2020.

New Street Additions (2006–2020)

SNDi value
2.77
Rank in Germany
52nd of 99
Rank in Niedersachsen
4th of 9

Entire Network (Aggregate)

SNDi value
1.82
Rank in Germany
28th of 99
Rank in Niedersachsen
3rd of 9

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

What about similarly populated cities?

1.522.533.5<19751976–19901991–20052006–2020SNDi of street additions
1.522.533.5<19751976–19901991–20052006–2020SNDi of entire street network
HildesheimMohammadiaTakaba

In new street additions, Hildesheim built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Mohammadia fluctuated in its street-construction patterns and Takaba built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns. For the full network, Hildesheim and Mohammadia both became progressively more disconnected, while Takaba became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards. Hildesheim and Takaba have been converging in their street-network character since 1975.