Chenghai in context: Street-network sprawl trends

Chenghai in context

3.544.5<19751976–19901991–20052006–2020SNDi of street additions
3.544.5<19751976–19901991–20052006–2020SNDi of entire street network
ChenghaiGuangdong (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Chenghai plotted against Guangdong and China. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Chenghai's incremental SNDi rose from 3.4 to 4.24 between 1991-2005 and 2006-2020. In terms of the aggregate network, Chenghai ranked 90th out of 133 cities in Guangdong and 1430th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
4.24
Rank in China
1471st of 1843
Rank in Guangdong
86th of 133

Entire Network (Aggregate)

SNDi value
3.62
Rank in China
1430th of 1843
Rank in Guangdong
90th of 133

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

What about similarly populated cities?

2.12.83.54.2<19751976–19901991–20052006–2020SNDi of street additions
2.12.83.54.2<19751976–19901991–20052006–2020SNDi of entire street network
ChenghaiSembawangNanyang

Chenghai, Sembawang, and Nanyang all fluctuated in its street-construction patterns in new street construction. For the full network, Chenghai and Sembawang both fluctuated in connectivity, while Nanyang became progressively more disconnected. Chenghai and Nanyang have been converging in their street-network character since 1975.