Bút Sơn in context: Street-network sprawl trends

But Son 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
But SonThanh Hoa (Region)Vietnam (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Bút Sơn plotted against Thanh Hóa and Vietnam. While Thanh Hóa and Vietnam both rose steadily, Bút Sơn's new street additions rose steadily. Most recently, Bút Sơn's incremental SNDi rose from 3.97 to 4.28 between 1991-2005 and 2006-2020. In terms of the aggregate network, Bút Sơn ranked 3rd out of 4 cities in Thanh Hóa and 37th out of 126 in Vietnam as of 2020.

New Street Additions (2006–2020)

SNDi value
4.28
Rank in Vietnam
48th of 126
Rank in Thanh Hóa
3rd of 4

Entire Network (Aggregate)

SNDi value
3.91
Rank in Vietnam
37th of 126
Rank in Thanh Hóa
3rd of 4

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

What about similarly populated cities?

2468<19751976–19901991–20052006–2020SNDi of street additions
2468<19751976–19901991–20052006–2020SNDi of entire street network
But SonAl Ruways Industrial cityKayalpattinam

In new street additions, Bút Sơn and Kayalpattinam both built increasingly disconnected streets over time, while Al Ruways Industrial city built increasingly disconnected streets from 1975 through 1991-2005, then improved. For the full network, Bút Sơn and Kayalpattinam both became progressively more disconnected, while Al Ruways Industrial city grew more disconnected from 1975 through 1991-2005, then improved. Notably, Bút Sơn had a more sprawly network than Kayalpattinam in 1975 but the two have since reversed their relative ranking.