Lu'an in context: Street-network sprawl trends

Lu'an in context

2.533.544.5<19751976–19901991–20052006–2020SNDi of street additions
2.533.544.5<19751976–19901991–20052006–2020SNDi of entire street network
Lu'anAnhui (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Lu'an plotted against Anhui and China. The SNDi of new construction in Lu'an was at its lowest in 1976-1990, compared to Anhui which followed a zig-zag trend with an overall increase and China which followed a zig-zag trend with an overall increase. Most recently, Lu'an's incremental SNDi rose from 2.89 to 2.95 between 1991-2005 and 2006-2020. In terms of the aggregate network, Lu'an ranked 62nd out of 74 cities in Anhui and 1390th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
2.95
Rank in China
852nd of 1843
Rank in Anhui
47th of 74

Entire Network (Aggregate)

SNDi value
3.54
Rank in China
1390th of 1843
Rank in Anhui
62nd of 74

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
Lu'anCancunMymensingh

While Cancún and Mymensingh both built increasingly disconnected streets over time, Lu'an built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns in new street additions. Looking at the full network, Cancún and Mymensingh both became progressively more disconnected, while Lu'an became progressively more connected. Notably, Lu'an had a more sprawly network than Mymensingh in 1975 but the two have since reversed their relative ranking.