Luotian County in context: Street-network sprawl trends

Luotian County in context

234<19751976–19901991–20052006–2020SNDi of street additions
234<19751976–19901991–20052006–2020SNDi of entire street network
Luotian CountyHubei (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Luotian County plotted against Hubei and China. The SNDi of new construction in Luotian County 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, Luotian County's incremental SNDi fell from 2.31 to 1.78 between 1991-2005 and 2006-2020. In terms of the aggregate network, Luotian County ranked 8th out of 77 cities in Hubei and 200th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
1.78
Rank in China
150th of 1843
Rank in Hubei
4th of 77

Entire Network (Aggregate)

SNDi value
1.94
Rank in China
200th of 1843
Rank in Hubei
8th of 77

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

What about similarly populated cities?

234<19751976–19901991–20052006–2020SNDi of street additions
234<19751976–19901991–20052006–2020SNDi of entire street network
Luotian CountyNianzhuangAraruama

In new street additions, Luotian County built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Nianzhuang fluctuated in its street-construction patterns and Araruama built increasingly disconnected streets over time. For the full network, Luotian County grew more disconnected from 1975 through 1991-2005, then improved, while Nianzhuang became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards and Araruama became progressively more disconnected. Notably, Luotian County had a more connected network than Nianzhuang in 1975 but the two have since reversed their relative ranking.