Rugao in context: Street-network sprawl trends

Rugao in context

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
RugaoJiangsu (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Rugao plotted against Jiangsu and China. The SNDi of new construction in Rugao rose steadily, compared to Jiangsu which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Rugao's incremental SNDi rose from 1.64 to 1.85 between 1991-2005 and 2006-2020. In terms of the aggregate network, Rugao ranked 6th out of 101 cities in Jiangsu and 70th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
1.85
Rank in China
182nd of 1843
Rank in Jiangsu
11th of 101

Entire Network (Aggregate)

SNDi value
1.63
Rank in China
70th of 1843
Rank in Jiangsu
6th of 101

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
RugaoCurupKambove

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