Gaoyao in context: Street-network sprawl trends

Gaoyao in context

2.83.54.24.9<19751976–19901991–20052006–2020SNDi of street additions
2.83.54.24.9<19751976–19901991–20052006–2020SNDi of entire street network
GaoyaoGuangdong (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Gaoyao plotted against Guangdong and China. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Gaoyao's incremental SNDi rose from 3.24 to 4.18 between 1991-2005 and 2006-2020. In terms of the aggregate network, Gaoyao ranked 65th out of 133 cities in Guangdong and 1167th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
4.18
Rank in China
1461st of 1843
Rank in Guangdong
83rd of 133

Entire Network (Aggregate)

SNDi value
3.18
Rank in China
1167th of 1843
Rank in Guangdong
65th of 133

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

What about similarly populated cities?

246<19751976–19901991–20052006–2020SNDi of street additions
246<19751976–19901991–20052006–2020SNDi of entire street network
GaoyaoTondanoShanghe

In new street additions, Gaoyao fluctuated in its street-construction patterns, while Tondano built increasingly disconnected streets from 1975 through 1991-2005, then improved and Shanghe built increasingly disconnected streets over time. For the full street network, though, all three cities follow the same trend.