Tongxiang in context: Street-network sprawl trends

Tongxiang 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
TongxiangZhejiang (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Tongxiang plotted against Zhejiang and China. The SNDi of new construction in Tongxiang peaked in 1991-2005, compared to Zhejiang which followed a zig-zag trend with an overall increase and China which followed a zig-zag trend with an overall increase. Most recently, Tongxiang's incremental SNDi fell from 3.78 to 3.59 between 1991-2005 and 2006-2020. In terms of the aggregate network, Tongxiang ranked 85th out of 116 cities in Zhejiang and 1412th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
3.59
Rank in China
1187th of 1843
Rank in Zhejiang
76th of 116

Entire Network (Aggregate)

SNDi value
3.58
Rank in China
1412th of 1843
Rank in Zhejiang
85th of 116

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

What about similarly populated cities?

23456<19751976–19901991–20052006–2020SNDi of street additions
23456<19751976–19901991–20052006–2020SNDi of entire street network
TongxiangPabnaPurnia

While Pabna and Purnia both built increasingly disconnected streets over time, Tongxiang built increasingly disconnected streets from 1975 through 1991-2005, then improved in new street additions. Looking at the full network, Pabna and Purnia both became progressively more disconnected, while Tongxiang grew more disconnected from 1975 through 1991-2005, then improved. Tongxiang and Purnia have been converging in their street-network character since 1975.