Yunyang in context: Street-network sprawl trends

Yunyang in context

3456<19751976–19901991–20052006–2020SNDi of street additions
3456<19751976–19901991–20052006–2020SNDi of entire street network
YunyangChongqing (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Yunyang plotted against Chongqing and China. The SNDi of new construction in Yunyang followed a zig-zag trend, compared to Chongqing which followed a zig-zag trend with an overall increase and China which followed a zig-zag trend with an overall increase. Most recently, Yunyang's incremental SNDi rose from 3.91 to 5.47 between 1991-2005 and 2006-2020. In terms of the aggregate network, Yunyang ranked 34th out of 47 cities in Chongqing and 1679th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
5.47
Rank in China
1700th of 1843
Rank in Chongqing
36th of 47

Entire Network (Aggregate)

SNDi value
4.63
Rank in China
1679th of 1843
Rank in Chongqing
34th of 47

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

What about similarly populated cities?

2468<19751976–19901991–20052006–2020SNDi of street additions
2468<19751976–19901991–20052006–2020SNDi of entire street network
YunyangOttapalamAl Falah

In new street additions, Yunyang fluctuated in its street-construction patterns, while Ottapalam built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns and Al Falah built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns. For the full network, Yunyang fluctuated in connectivity, while Ottapalam became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards and Al Falah became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards. Yunyang and Ottapalam have been converging in their street-network character since 1975.