Huacheng in context: Street-network sprawl trends

Huacheng in context

34567<19751976–19901991–20052006–2020SNDi of street additions
34567<19751976–19901991–20052006–2020SNDi of entire street network
HuachengGuangdong (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Huacheng plotted against Guangdong and China. The SNDi of new construction in Huacheng was at its lowest in 1976-1990, compared to Guangdong which followed a zig-zag trend with an overall increase and China which followed a zig-zag trend with an overall increase. Most recently, Huacheng's incremental SNDi rose from 5.26 to 6.77 between 1991-2005 and 2006-2020. In terms of the aggregate network, Huacheng ranked 124th out of 133 cities in Guangdong and 1761st out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
6.77
Rank in China
1790th of 1843
Rank in Guangdong
122nd of 133

Entire Network (Aggregate)

SNDi value
5.41
Rank in China
1761st of 1843
Rank in Guangdong
124th of 133

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

What about similarly populated cities?

234567<19751976–19901991–20052006–2020SNDi of street additions
234567<19751976–19901991–20052006–2020SNDi of entire street network
HuachengArzewPavia

In new street additions, Huacheng built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns, while Arzew built increasingly disconnected streets from 1975 through 1976-1990, then improved and Pavia built increasingly disconnected streets from 1975 through 1991-2005, then improved. For the full network, Huacheng became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards, while Arzew grew more disconnected from 1975 through 1976-1990, then improved and Pavia became progressively more disconnected.