Gliwice in context: Street-network sprawl trends

Gliwice in context

1.82.73.64.5<19751976–19901991–20052006–2020SNDi of street additions
1.82.73.64.5<19751976–19901991–20052006–2020SNDi of entire street network
GliwiceSlaskie (Region)Poland (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Gliwice plotted against Śląskie and Poland. The SNDi of new construction in Gliwice peaked in 1991-2005, compared to Śląskie which rose steadily and Poland which rose steadily. Most recently, Gliwice's incremental SNDi fell from 3.72 to 3.27 between 1991-2005 and 2006-2020. In terms of the aggregate network, Gliwice ranked 2nd out of 8 cities in Śląskie and 21st out of 63 in Poland as of 2020.

New Street Additions (2006–2020)

SNDi value
3.27
Rank in Poland
30th of 63
Rank in Śląskie
1st of 8

Entire Network (Aggregate)

SNDi value
2.12
Rank in Poland
21st of 63
Rank in Śląskie
2nd of 8

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

What about similarly populated cities?

0.81.62.43.24<19751976–19901991–20052006–2020SNDi of street additions
0.81.62.43.24<19751976–19901991–20052006–2020SNDi of entire street network
GliwicePassosJizhou

In new street additions, Gliwice built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Passos built increasingly disconnected streets over time and Jizhou fluctuated in its street-construction patterns. For the full network, Gliwice and Passos both became progressively more disconnected, while Jizhou grew more disconnected from 1975 through 1976-1990, then improved. Gliwice and Jizhou have been converging in their street-network character since 1975.