Guiyang in context: Street-network sprawl trends

Guiyang in context

3.544.55<19751976–19901991–20052006–2020SNDi of street additions
3.544.55<19751976–19901991–20052006–2020SNDi of entire street network
GuiyangGuizhou (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Guiyang plotted against Guizhou and China. The SNDi of new construction in Guiyang 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, Guiyang's incremental SNDi fell from 3.71 to 3.4 between 1991-2005 and 2006-2020. In terms of the aggregate network, Guiyang ranked 25th out of 41 cities in Guizhou and 1396th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
3.4
Rank in China
1105th of 1843
Rank in Guizhou
22nd of 41

Entire Network (Aggregate)

SNDi value
3.55
Rank in China
1396th of 1843
Rank in Guizhou
25th of 41

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

What about similarly populated cities?

1.82.73.64.5<19751976–19901991–20052006–2020SNDi of street additions
1.82.73.64.5<19751976–19901991–20052006–2020SNDi of entire street network
GuiyangEssenMaharajganj

In new street additions, Guiyang built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Essen built increasingly disconnected streets over time and Maharajganj fluctuated in its street-construction patterns. For the full network, Guiyang grew more disconnected from 1975 through 1991-2005, then improved, while Essen became progressively more disconnected and Maharajganj became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards.