Chibi in context: Street-network sprawl trends

Chibi in context

2.83.54.2<19751976–19901991–20052006–2020SNDi of street additions
2.83.54.2<19751976–19901991–20052006–2020SNDi of entire street network
ChibiHubei (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Chibi plotted against Hubei and China. The SNDi of new construction in Chibi followed a zig-zag trend with an overall decrease, compared to Hubei which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Chibi's incremental SNDi fell from 4.07 to 2.95 between 1991-2005 and 2006-2020. In terms of the aggregate network, Chibi ranked 55th out of 77 cities in Hubei and 1279th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
2.95
Rank in China
848th of 1843
Rank in Hubei
33rd of 77

Entire Network (Aggregate)

SNDi value
3.35
Rank in China
1279th of 1843
Rank in Hubei
55th of 77

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

What about similarly populated cities?

2.433.64.2<19751976–19901991–20052006–2020SNDi of street additions
2.433.64.2<19751976–19901991–20052006–2020SNDi of entire street network
ChibiLaharpurQionglai

In new street additions, Chibi fluctuated in its street-construction patterns, while Laharpur built increasingly disconnected streets over time and Qionglai built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns. For the full network, Chibi fluctuated in connectivity, while Laharpur became progressively more disconnected and Qionglai became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards. Notably, Chibi had a more sprawly network than Laharpur in 1975 but the two have since reversed their relative ranking.