Tarnów in context: Street-network sprawl trends

Tarnow 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
TarnowMalopolskie (Region)Poland (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Tarnów plotted against Małopolskie and Poland. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Tarnów's incremental SNDi rose from 3.3 to 4.49 between 1991-2005 and 2006-2020. In terms of the aggregate network, Tarnów ranked 2nd out of 3 cities in Małopolskie and 50th out of 63 in Poland as of 2020.

New Street Additions (2006–2020)

SNDi value
4.49
Rank in Poland
57th of 63
Rank in Małopolskie
2nd of 3

Entire Network (Aggregate)

SNDi value
2.69
Rank in Poland
50th of 63
Rank in Małopolskie
2nd of 3

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

What about similarly populated cities?

2.73.64.55.4<19751976–19901991–20052006–2020SNDi of street additions
2.73.64.55.4<19751976–19901991–20052006–2020SNDi of entire street network
TarnowYudongTailai

In new street additions, Tarnów and Tailai both built increasingly disconnected streets over time, while Yudong fluctuated in its street-construction patterns. For the full network, Tarnów and Tailai both became progressively more disconnected, while Yudong fluctuated in connectivity. Tarnów and Yudong have been converging in their street-network character since 1975.