Lạng Sơn in context: Street-network sprawl trends

Lang Son in context

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
Lang SonVietnam (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Lạng Sơn plotted against Vietnam. The SNDi of new construction in Lạng Sơn peaked in 1991-2005, while Vietnam rose steadily. Most recently, Lạng Sơn's incremental SNDi fell from 5.64 to 4.76 between 1991-2005 and 2006-2020. In terms of the aggregate network, Lạng Sơn ranked 87th out of 126 in Vietnam as of 2020.

New Street Additions (2006–2020)

SNDi value
4.76
Rank in Vietnam
65th of 126

Entire Network (Aggregate)

SNDi value
4.91
Rank in Vietnam
87th of 126

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

What about similarly populated cities?

51015<19751976–19901991–20052006–2020SNDi of street additions
51015<19751976–19901991–20052006–2020SNDi of entire street network
Lang SonBoyeKayempur

In new street additions, Lạng Sơn built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Boye fluctuated in its street-construction patterns and Kayempur built increasingly disconnected streets over time. Looking at the full network, Boye and Kayempur both became progressively more disconnected, while Lạng Sơn grew more disconnected from 1975 through 1991-2005, then improved. Lạng Sơn and Boye have been growing further apart in their street-network character since 1975.