Yunyang in context: Street-network sprawl trends

Yunyang in context

33.544.5<19751976–19901991–20052006–2020SNDi of street additions
33.544.5<19751976–19901991–20052006–2020SNDi of entire street network
YunyangHubei (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Yunyang plotted against Hubei and China. The SNDi of new construction in Yunyang peaked in 1991-2005, compared to Hubei which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Yunyang's incremental SNDi fell from 3.49 to 3.03 between 1991-2005 and 2006-2020. In terms of the aggregate network, Yunyang ranked 49th out of 77 cities in Hubei as of 2020.

New Street Additions (2006–2020)

SNDi value
3.03
Rank in Hubei
37th of 77

Entire Network (Aggregate)

SNDi value
3.13
Rank in Hubei
49th of 77

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

What about similarly populated cities?

22.533.5<19751976–19901991–20052006–2020SNDi of street additions
22.533.5<19751976–19901991–20052006–2020SNDi of entire street network
YunyangKabongoQinghe

While Kabongo and Qinghe both fluctuated in its street-construction patterns, Yunyang built increasingly disconnected streets from 1975 through 1991-2005, then improved in new street additions. For the full network, Yunyang grew more disconnected from 1975 through 1991-2005, then improved, while Kabongo became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards and Qinghe fluctuated in connectivity.