Xinjin in context: Street-network sprawl trends

Xinjin 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
XinjinSichuan (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Xinjin plotted against Sichuan and China. The SNDi of new construction in Xinjin rose steadily, compared to Sichuan which followed a zig-zag trend with an overall increase and China which followed a zig-zag trend with an overall increase. Most recently, Xinjin's incremental SNDi rose from 3.23 to 3.79 between 1991-2005 and 2006-2020. In terms of the aggregate network, Xinjin ranked 53rd out of 98 cities in Sichuan and 1118th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
3.79
Rank in China
1305th of 1843
Rank in Sichuan
64th of 98

Entire Network (Aggregate)

SNDi value
3.12
Rank in China
1118th of 1843
Rank in Sichuan
53rd of 98

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

What about similarly populated cities?

1.42.12.83.5<19751976–19901991–20052006–2020SNDi of street additions
1.42.12.83.5<19751976–19901991–20052006–2020SNDi of entire street network
XinjinGottingenNeihuang

In new street additions, Xinjin built increasingly disconnected streets over time, while Göttingen built increasingly disconnected streets from 1975 through 1991-2005, then improved and Neihuang built increasingly disconnected streets from 1975 through 1976-1990, then improved. For the full street network, though, all three cities follow the same trend. Notably, Xinjin had a more connected network than Neihuang in 1975 but the two have since reversed their relative ranking.