Wanning in context: Street-network sprawl trends

Wanning in context

2.83.54.24.9<19751976–19901991–20052006–2020SNDi of street additions
2.83.54.24.9<19751976–19901991–20052006–2020SNDi of entire street network
WanningHainan (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Wanning plotted against Hainan and China. The SNDi of new construction in Wanning peaked in 1991-2005, compared to Hainan which followed a zig-zag trend with an overall increase and China which followed a zig-zag trend with an overall increase. Most recently, Wanning's incremental SNDi fell from 4.04 to 3.06 between 1991-2005 and 2006-2020. In terms of the aggregate network, Wanning ranked 5th out of 17 cities in Hainan and 1233rd out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
3.06
Rank in China
923rd of 1843
Rank in Hainan
5th of 17

Entire Network (Aggregate)

SNDi value
3.27
Rank in China
1233rd of 1843
Rank in Hainan
5th of 17

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

What about similarly populated cities?

2468<19751976–19901991–20052006–2020SNDi of street additions
2468<19751976–19901991–20052006–2020SNDi of entire street network
WanningLubuklinggauValera

In new street additions, Wanning and Valera both built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Lubuklinggau fluctuated in its street-construction patterns. Looking at the full network, Lubuklinggau and Valera both became progressively more disconnected, while Wanning grew more disconnected from 1975 through 1991-2005, then improved.