Rong'an in context: Street-network sprawl trends

Rong'an in context

3.54.24.95.6<19751976–19901991–20052006–2020SNDi of street additions
3.54.24.95.6<19751976–19901991–20052006–2020SNDi of entire street network
Rong'anGuangxi (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Rong'an plotted against Guangxi and China. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Rong'an's incremental SNDi rose from 3.38 to 5.4 between 1991-2005 and 2006-2020. In terms of the aggregate network, Rong'an ranked 52nd out of 63 cities in Guangxi and 1490th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
5.4
Rank in China
1695th of 1843
Rank in Guangxi
55th of 63

Entire Network (Aggregate)

SNDi value
3.79
Rank in China
1490th of 1843
Rank in Guangxi
52nd of 63

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

What about similarly populated cities?

2.73.64.55.4<19751976–19901991–20052006–2020SNDi of street additions
2.73.64.55.4<19751976–19901991–20052006–2020SNDi of entire street network
Rong'anViganZitacuaro

In new street additions, Rong'an fluctuated in its street-construction patterns, while Vigan built increasingly disconnected streets from 1975 through 1991-2005, then improved and Zitácuaro built increasingly disconnected streets over time. Looking at the full network, Vigan and Zitácuaro both became progressively more disconnected, while Rong'an fluctuated in connectivity. Notably, Rong'an had a more sprawly network than Zitácuaro in 1975 but the two have since reversed their relative ranking.