Laixi in context: Street-network sprawl trends

Laixi in context

2.433.64.2<19751976–19901991–20052006–2020SNDi of street additions
2.433.64.2<19751976–19901991–20052006–2020SNDi of entire street network
LaixiShandong (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Laixi plotted against Shandong and China. While Shandong and China both followed a zig-zag trend with an overall increase, Laixi's new street additions followed a zig-zag trend with an overall decrease. Most recently, Laixi's incremental SNDi rose from 2.31 to 2.47 between 1991-2005 and 2006-2020. In terms of the aggregate network, Laixi ranked 84th out of 124 cities in Shandong and 843rd out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
2.47
Rank in China
498th of 1843
Rank in Shandong
53rd of 124

Entire Network (Aggregate)

SNDi value
2.79
Rank in China
843rd of 1843
Rank in Shandong
84th of 124

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

What about similarly populated cities?

2345<19751976–19901991–20052006–2020SNDi of street additions
2345<19751976–19901991–20052006–2020SNDi of entire street network
LaixiMayiladuthuraiSaint-Louis

In new street additions, Laixi and Saint-Louis both fluctuated in its street-construction patterns, while Mayiladuthurai built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns. For the full network, Laixi grew more disconnected from 1975 through 1976-1990, then improved, while Mayiladuthurai became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards and Saint-Louis became progressively more disconnected. Laixi and Mayiladuthurai have been converging in their street-network character since 1975.