Xinchang in context: Street-network sprawl trends

Xinchang 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
XinchangZhejiang (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Xinchang plotted against Zhejiang and China. The SNDi of new construction in Xinchang peaked in 1991-2005, compared to Zhejiang which followed a zig-zag trend with an overall increase and China which followed a zig-zag trend with an overall increase. Most recently, Xinchang's incremental SNDi fell from 3.31 to 2.95 between 1991-2005 and 2006-2020. In terms of the aggregate network, Xinchang ranked 63rd out of 116 cities in Zhejiang and 905th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
2.95
Rank in China
850th of 1843
Rank in Zhejiang
60th of 116

Entire Network (Aggregate)

SNDi value
2.86
Rank in China
905th of 1843
Rank in Zhejiang
63rd of 116

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
XinchangSan-PedroCannes

Xinchang, San-Pédro, and Cannes all built increasingly disconnected streets from 1975 through 1991-2005, then improved in new street construction. The same pattern holds for the full street network. Xinchang and San-Pédro have been converging in their street-network character since 1975.