Xindai in context: Street-network sprawl trends

Xindai 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
XindaiZhejiang (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Xindai plotted against Zhejiang and China. The SNDi of new construction in Xindai was at its lowest in 1976-1990, 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, Xindai's incremental SNDi rose from 2.58 to 2.63 between 1991-2005 and 2006-2020. In terms of the aggregate network, Xindai ranked 38th out of 116 cities in Zhejiang and 638th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
2.63
Rank in China
611th of 1843
Rank in Zhejiang
40th of 116

Entire Network (Aggregate)

SNDi value
2.56
Rank in China
638th of 1843
Rank in Zhejiang
38th of 116

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

What about similarly populated cities?

1.62.43.24<19751976–19901991–20052006–2020SNDi of street additions
1.62.43.24<19751976–19901991–20052006–2020SNDi of entire street network
XindaiKoupelaGuangling

While Koupéla and Guangling both built increasingly disconnected streets from 1975 through 1991-2005, then improved, Xindai built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns in new street additions. Looking at the full network, Koupéla and Guangling both grew more disconnected from 1975 through 1991-2005, then improved, while Xindai became progressively more disconnected. Notably, Xindai had a more connected network than Koupéla in 1975 but the two have since reversed their relative ranking.