Tianyang in context: Street-network sprawl trends

Tianyang in context

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

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Tianyang plotted against Guangxi and China. The SNDi of new construction in Tianyang peaked in 1976-1990, compared to Guangxi which followed a zig-zag trend with an overall increase and China which followed a zig-zag trend with an overall increase. Most recently, Tianyang's incremental SNDi fell from 2.99 to 2.98 between 1991-2005 and 2006-2020. In terms of the aggregate network, Tianyang ranked 39th out of 63 cities in Guangxi and 1268th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
2.98
Rank in China
871st of 1843
Rank in Guangxi
19th of 63

Entire Network (Aggregate)

SNDi value
3.33
Rank in China
1268th of 1843
Rank in Guangxi
39th of 63

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

What about similarly populated cities?

0246<19751976–19901991–20052006–2020SNDi of street additions
0246<19751976–19901991–20052006–2020SNDi of entire street network
TianyangHiranpurHereford

In new street additions, Tianyang built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Hiranpur fluctuated in its street-construction patterns and Hereford fluctuated in its street-construction patterns. For the full network, Tianyang grew more disconnected from 1975 through 1976-1990, then improved, while Hiranpur became progressively more disconnected and Hereford became progressively more disconnected. Notably, Tianyang had a more sprawly network than Hereford in 1975 but the two have since reversed their relative ranking.