Lianzhou in context: Street-network sprawl trends

Lianzhou in context

3.54.24.95.6<19751976–19901991–20052006–2020SNDi of street additions
3.54.24.95.6<19751976–19901991–20052006–2020SNDi of entire street network
LianzhouGuangdong (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Lianzhou plotted against Guangdong and China. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Lianzhou's incremental SNDi rose from 3.37 to 4.17 between 1991-2005 and 2006-2020. In terms of the aggregate network, Lianzhou ranked 93rd out of 133 cities in Guangdong and 1473rd out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
4.17
Rank in China
1459th of 1843
Rank in Guangdong
82nd of 133

Entire Network (Aggregate)

SNDi value
3.73
Rank in China
1473rd of 1843
Rank in Guangdong
93rd of 133

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

What about similarly populated cities?

12345<19751976–19901991–20052006–2020SNDi of street additions
12345<19751976–19901991–20052006–2020SNDi of entire street network
LianzhouWorcesterGaya

In new street additions, Lianzhou fluctuated in its street-construction patterns, while Worcester built increasingly disconnected streets from 1975 through 1991-2005, then improved and Gaya built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns. For the full network, Lianzhou fluctuated in connectivity, while Worcester became progressively more disconnected and Gaya became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards.