Xincai in context: Street-network sprawl trends

Xincai 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
XincaiHenan (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Xincai plotted against Henan and China. The SNDi of new construction in Xincai peaked in 1991-2005, compared to Henan which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Xincai's incremental SNDi fell from 1.89 to 1.84 between 1991-2005 and 2006-2020. In terms of the aggregate network, Xincai ranked 18th out of 129 cities in Henan and 107th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
1.84
Rank in China
180th of 1843
Rank in Henan
21st of 129

Entire Network (Aggregate)

SNDi value
1.73
Rank in China
107th of 1843
Rank in Henan
18th of 129

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
XincaiJerashLangwarrin

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