Tczew in context: Street-network sprawl trends

Tczew in context

2.433.64.2<19751976–19901991–20052006–2020SNDi of street additions
2.433.64.2<19751976–19901991–20052006–2020SNDi of entire street network
TczewPomorskie (Region)Poland (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Tczew plotted against Pomorskie and Poland. The SNDi of new construction in Tczew peaked in 1976-1990, compared to Pomorskie which rose steadily and Poland which rose steadily. Most recently, Tczew's incremental SNDi fell from 3.53 to 3.09 between 1991-2005 and 2006-2020. In terms of the aggregate network, Tczew ranked 6th out of 6 cities in Pomorskie and 60th out of 63 in Poland as of 2020.

New Street Additions (2006–2020)

SNDi value
3.09
Rank in Poland
27th of 63
Rank in Pomorskie
1st of 6

Entire Network (Aggregate)

SNDi value
3.13
Rank in Poland
60th of 63
Rank in Pomorskie
6th of 6

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

What about similarly populated cities?

1.62.43.24<19751976–19901991–20052006–2020SNDi of street additions
1.62.43.24<19751976–19901991–20052006–2020SNDi of entire street network
TczewSenador CanedoTakestan

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