Suiyang in context: Street-network sprawl trends

Suiyang in context

12345<19751976–19901991–20052006–2020SNDi of street additions
12345<19751976–19901991–20052006–2020SNDi of entire street network
SuiyangGuizhou (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Suiyang plotted against Guizhou and China. The SNDi of new construction in Suiyang was at its lowest 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, Suiyang's incremental SNDi rose from 1.3 to 2.73 between 1991-2005 and 2006-2020. In terms of the aggregate network, Suiyang ranked 5th out of 41 cities in Guizhou and 278th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
2.73
Rank in China
679th of 1843
Rank in Guizhou
11th of 41

Entire Network (Aggregate)

SNDi value
2.11
Rank in China
278th of 1843
Rank in Guizhou
5th of 41

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

What about similarly populated cities?

2468<19751976–19901991–20052006–2020SNDi of street additions
2468<19751976–19901991–20052006–2020SNDi of entire street network
SuiyangAmdabadPhu Lien

In new street additions, Suiyang built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns, while Amdabad built increasingly disconnected streets over time and Phú Liên built increasingly disconnected streets from 1975 through 1976-1990, then improved. For the full network, Suiyang became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards, while Amdabad became progressively more disconnected and Phú Liên became progressively more connected.