Zielona Góra in context: Street-network sprawl trends

Zielona Gora in context

2.12.83.54.2<19751976–19901991–20052006–2020SNDi of street additions
2.12.83.54.2<19751976–19901991–20052006–2020SNDi of entire street network
Zielona GoraLubuskie (Region)Poland (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Zielona Góra plotted against Lubuskie and Poland. The SNDi of new construction in Zielona Góra peaked in 1991-2005, compared to Lubuskie which rose steadily and Poland which rose steadily. Most recently, Zielona Góra's incremental SNDi fell from 2.35 to 1.92 between 1991-2005 and 2006-2020. In terms of the aggregate network, Zielona Góra ranked 1st out of 2 cities in Lubuskie and 9th out of 63 in Poland as of 2020.

New Street Additions (2006–2020)

SNDi value
1.92
Rank in Poland
3rd of 63
Rank in Lubuskie
1st of 2

Entire Network (Aggregate)

SNDi value
1.86
Rank in Poland
9th of 63
Rank in Lubuskie
1st of 2

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

What about similarly populated cities?

2.12.83.54.2<19751976–19901991–20052006–2020SNDi of street additions
2.12.83.54.2<19751976–19901991–20052006–2020SNDi of entire street network
Zielona GoraJiangyuanRanebennur

In new street additions, Zielona Góra built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Jiangyuan built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns and Ranebennur built increasingly disconnected streets over time. For the full network, Zielona Góra grew more disconnected from 1975 through 1991-2005, then improved, while Jiangyuan fluctuated in connectivity and Ranebennur became progressively more disconnected. Zielona Góra and Ranebennur have been growing further apart in their street-network character since 1975.