Quanjiao in context: Street-network sprawl trends

Quanjiao 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
QuanjiaoAnhui (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Quanjiao plotted against Anhui and China. The SNDi of new construction in Quanjiao peaked 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, Quanjiao's incremental SNDi fell from 3.23 to 2.43 between 1991-2005 and 2006-2020. In terms of the aggregate network, Quanjiao ranked 39th out of 74 cities in Anhui and 672nd out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
2.43
Rank in China
473rd of 1843
Rank in Anhui
31st of 74

Entire Network (Aggregate)

SNDi value
2.61
Rank in China
672nd of 1843
Rank in Anhui
39th of 74

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

What about similarly populated cities?

2.43.244.8<19751976–19901991–20052006–2020SNDi of street additions
2.43.244.8<19751976–19901991–20052006–2020SNDi of entire street network
QuanjiaoMandideepMbarara

In new street additions, Quanjiao built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Mandideep built increasingly disconnected streets from 1975 through 1991-2005, then improved and Mbarara built increasingly disconnected streets over time. Looking at the full network, Mandideep and Mbarara both became progressively more disconnected, while Quanjiao grew more disconnected from 1975 through 1991-2005, then improved. Quanjiao and Mandideep have been growing further apart in their street-network character since 1975.