Songnim in context: Street-network sprawl trends
Songnim in context
The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Songnim plotted against Hwanghae-bukto and North Korea. The SNDi of new construction in Songnim followed a zig-zag trend with an overall increase, compared to Hwanghae-bukto which followed a zig-zag trend with an overall increase and North Korea which peaked in 1976-1990. Most recently, Songnim's incremental SNDi rose from 5.77 to 6.71 between 1991-2005 and 2006-2020. In terms of the aggregate network, Songnim ranked 4th out of 6 cities in Hwanghae-bukto and 58th out of 92 in North Korea as of 2020.
New Street Additions (2006–2020)
- SNDi value
- 6.71
- Rank in North Korea
- 69th of 92
- Rank in Hwanghae-bukto
- 6th of 6
Entire Network (Aggregate)
- SNDi value
- 5.46
- Rank in North Korea
- 58th of 92
- Rank in Hwanghae-bukto
- 4th of 6
Rankings go from most connected to most disconnected — rank 1 is the most connected.
What about similarly populated cities?
- Parakou, Benin
- Sers Al Layyan, Egypt
- Guiping, China
- Porlamar, Venezuela
- Sihui, China
- Kanyamazane, South Africa
Songnim, Parakou, and Porlamar all fluctuated in its street-construction patterns in new street construction. For the full network, Songnim and Parakou both became progressively more disconnected, while Porlamar fluctuated in connectivity. Songnim and Porlamar have been converging in their street-network character since 1975.