Taizhou in context: Street-network sprawl trends

Taizhou 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
TaizhouJiangsu (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Taizhou plotted against Jiangsu and China. The SNDi of new construction in Taizhou peaked in 1976-1990, compared to Jiangsu which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Taizhou's incremental SNDi fell from 3.23 to 2.95 between 1991-2005 and 2006-2020. In terms of the aggregate network, Taizhou ranked 60th out of 101 cities in Jiangsu and 1027th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
2.95
Rank in China
847th of 1843
Rank in Jiangsu
53rd of 101

Entire Network (Aggregate)

SNDi value
2.99
Rank in China
1027th of 1843
Rank in Jiangsu
60th of 101

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

What about similarly populated cities?

2.43.244.8<19751976–19901991–20052006–2020SNDi of street additions
2.43.244.8<19751976–19901991–20052006–2020SNDi of entire street network
TaizhouSeebJixi

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