Laohekou in context: Street-network sprawl trends

Laohekou in context

1.82.73.64.5<19751976–19901991–20052006–2020SNDi of street additions
1.82.73.64.5<19751976–19901991–20052006–2020SNDi of entire street network
LaohekouHubei (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Laohekou plotted against Hubei and China. The SNDi of new construction in Laohekou 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, Laohekou's incremental SNDi fell from 3.56 to 2.87 between 1991-2005 and 2006-2020. In terms of the aggregate network, Laohekou ranked 15th out of 77 cities in Hubei and 391st out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
2.87
Rank in China
788th of 1843
Rank in Hubei
29th of 77

Entire Network (Aggregate)

SNDi value
2.25
Rank in China
391st of 1843
Rank in Hubei
15th of 77

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

What about similarly populated cities?

1.62.43.24<19751976–19901991–20052006–2020SNDi of street additions
1.62.43.24<19751976–19901991–20052006–2020SNDi of entire street network
LaohekouYong'anCafunfo

In new street additions, Laohekou built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Yong'an fluctuated in its street-construction patterns and Cafunfo built increasingly disconnected streets from 1975 through 1976-1990, then improved. For the full network, Laohekou became progressively more disconnected, while Yong'an grew more disconnected from 1975 through 1976-1990, then improved and Cafunfo grew more disconnected from 1975 through 1991-2005, then improved. Laohekou and Yong'an have been converging in their street-network character since 1975.