Tam Hồng in context: Street-network sprawl trends

Tam Hong 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
Tam HongVinh Phuc (Region)Vietnam (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Tam Hồng plotted against Vĩnh Phúc and Vietnam. The SNDi of new construction in Tam Hồng was at its lowest in 1976-1990, compared to Vĩnh Phúc which was at its lowest in 1976-1990 and Vietnam which rose steadily. Most recently, Tam Hồng's incremental SNDi rose from 3.86 to 3.88 between 1991-2005 and 2006-2020. In terms of the aggregate network, Tam Hồng ranked 2nd out of 3 cities in Vĩnh Phúc and 35th out of 126 in Vietnam as of 2020.

New Street Additions (2006–2020)

SNDi value
3.88
Rank in Vietnam
36th of 126
Rank in Vĩnh Phúc
3rd of 3

Entire Network (Aggregate)

SNDi value
3.85
Rank in Vietnam
35th of 126
Rank in Vĩnh Phúc
2nd of 3

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

What about similarly populated cities?

2345<19751976–19901991–20052006–2020SNDi of street additions
2345<19751976–19901991–20052006–2020SNDi of entire street network
Tam HongMasayaGangavathi

In new street additions, Tam Hồng and Gangavathi both built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns, while Masaya built increasingly disconnected streets over time. For the full network, Tam Hồng and Gangavathi both became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards, while Masaya became progressively more disconnected. Tam Hồng and Gangavathi have been converging in their street-network character since 1975.