Hải Phòng in context: Street-network sprawl trends

Hai Phong in context

23456<19751976–19901991–20052006–2020SNDi of street additions
23456<19751976–19901991–20052006–2020SNDi of entire street network
Hai PhongVietnam (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Hải Phòng plotted against Vietnam. Both Hải Phòng and Vietnam follow the same trend. Most recently, Hải Phòng's incremental SNDi rose from 4.78 to 5.46 between 1991-2005 and 2006-2020. In terms of the aggregate network, Hải Phòng ranked 80th out of 126 in Vietnam as of 2020.

New Street Additions (2006–2020)

SNDi value
5.46
Rank in Vietnam
93rd of 126

Entire Network (Aggregate)

SNDi value
4.65
Rank in Vietnam
80th of 126

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
Hai PhongLeedsSan Pedro Sula

In new street additions, Hải Phòng and San Pedro Sula both built increasingly disconnected streets over time, while Leeds built increasingly disconnected streets from 1975 through 1991-2005, then improved. For the full street network, though, all three cities follow the same trend. Notably, Hải Phòng had a more connected network than Leeds in 1975, but the two have since reversed their relative ranking.