Phúc Yên in context: Street-network sprawl trends

Phuc Yen 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
Phuc YenVinh Phuc (Region)Vietnam (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Phúc Yên plotted against Vĩnh Phúc and Vietnam. The SNDi of new construction in Phúc Yên peaked in 1991-2005, compared to Vĩnh Phúc which was at its lowest in 1976-1990 and Vietnam which rose steadily. Most recently, Phúc Yên's incremental SNDi fell from 4.49 to 3.58 between 1991-2005 and 2006-2020. In terms of the aggregate network, Phúc Yên ranked 3rd out of 3 cities in Vĩnh Phúc and 61st out of 126 in Vietnam as of 2020.

New Street Additions (2006–2020)

SNDi value
3.58
Rank in Vietnam
30th of 126
Rank in Vĩnh Phúc
2nd of 3

Entire Network (Aggregate)

SNDi value
4.23
Rank in Vietnam
61st of 126
Rank in Vĩnh Phúc
3rd of 3

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

What about similarly populated cities?

1.62.43.244.8<19751976–19901991–20052006–2020SNDi of street additions
1.62.43.244.8<19751976–19901991–20052006–2020SNDi of entire street network
Phuc YenContramaestrePehowa

In new street additions, Phúc Yên built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Contramaestre built increasingly disconnected streets over time and Pehowa fluctuated in its street-construction patterns. Looking at the full network, Contramaestre and Pehowa both became progressively more disconnected, while Phúc Yên grew more disconnected from 1975 through 1991-2005, then improved. Phúc Yên and Contramaestre have been converging in their street-network character since 1975.