Vinh in context: Street-network sprawl trends

Vinh in context

3456<19751976–19901991–20052006–2020SNDi of street additions
3456<19751976–19901991–20052006–2020SNDi of entire street network
VinhNghe An (Region)Vietnam (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Vinh plotted against Nghệ An and Vietnam. The SNDi of new construction in Vinh peaked in 1991-2005, compared to Nghệ An which followed a zig-zag trend with an overall increase and Vietnam which rose steadily. Most recently, Vinh's incremental SNDi fell from 3.62 to 2.99 between 1991-2005 and 2006-2020. In terms of the aggregate network, Vinh ranked 1st out of 4 cities in Nghệ An and 20th out of 126 in Vietnam as of 2020.

New Street Additions (2006–2020)

SNDi value
2.99
Rank in Vietnam
15th of 126
Rank in Nghệ An
1st of 4

Entire Network (Aggregate)

SNDi value
3.23
Rank in Vietnam
20th of 126
Rank in Nghệ An
1st of 4

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

What about similarly populated cities?

2.43.244.8<19751976–19901991–20052006–2020SNDi of street additions
2.43.244.8<19751976–19901991–20052006–2020SNDi of entire street network
VinhPiracicabaMagnitogorsk

In new street additions, Vinh and Magnitogorsk both built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Piracicaba built increasingly disconnected streets over time. Looking at the full network, Piracicaba and Magnitogorsk both became progressively more disconnected, while Vinh grew more disconnected from 1975 through 1991-2005, then improved. Vinh and Piracicaba have been converging in their street-network character since 1975.