Wangjiazhai in context: Street-network sprawl trends

Wangjiazhai in context

46810<19751976–19901991–20052006–2020SNDi of street additions
46810<19751976–19901991–20052006–2020SNDi of entire street network
WangjiazhaiGuizhou (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Wangjiazhai plotted against Guizhou and China. The SNDi of new construction in Wangjiazhai peaked in 1976-1990, compared to Guizhou which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Wangjiazhai's incremental SNDi fell from 6.85 to 5.39 between 1991-2005 and 2006-2020. In terms of the aggregate network, Wangjiazhai ranked 41st out of 41 cities in Guizhou and 1814th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
5.39
Rank in China
1694th of 1843
Rank in Guizhou
38th of 41

Entire Network (Aggregate)

SNDi value
6.68
Rank in China
1814th of 1843
Rank in Guizhou
41st of 41

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

What about similarly populated cities?

246810<19751976–19901991–20052006–2020SNDi of street additions
246810<19751976–19901991–20052006–2020SNDi of entire street network
WangjiazhaiJalapaFateh Jang

In new street additions, Wangjiazhai built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Jalapa built increasingly disconnected streets over time and Fateh Jang built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns. For the full network, Wangjiazhai grew more disconnected from 1975 through 1976-1990, then improved, while Jalapa became progressively more disconnected and Fateh Jang became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards. Wangjiazhai and Jalapa have been converging in their street-network character since 1975.