Luling in context: Street-network sprawl trends

Luling in context

34567<19751976–19901991–20052006–2020SNDi of street additions
34567<19751976–19901991–20052006–2020SNDi of entire street network
LulingAnhui (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Luling plotted against Anhui and China. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Luling's incremental SNDi rose from 6.23 to 7.22 between 1991-2005 and 2006-2020. In terms of the aggregate network, Luling ranked 72nd out of 74 cities in Anhui and 1784th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
7.22
Rank in China
1796th of 1843
Rank in Anhui
73rd of 74

Entire Network (Aggregate)

SNDi value
5.74
Rank in China
1784th of 1843
Rank in Anhui
72nd of 74

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

What about similarly populated cities?

4.55.46.37.2<19751976–19901991–20052006–2020SNDi of street additions
4.55.46.37.2<19751976–19901991–20052006–2020SNDi of entire street network
LulingEl ZorroLahar

In new street additions, Luling and El Zorro both fluctuated in its street-construction patterns, while Lahar built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns. For the full network, Luling and Lahar both became progressively more disconnected, while El Zorro fluctuated in connectivity. Notably, Luling had a more sprawly network than Lahar in 1975 but the two have since reversed their relative ranking.