Sinwon in context: Street-network sprawl trends

Sinwon in context

45678<19751976–19901991–20052006–2020SNDi of street additions
45678<19751976–19901991–20052006–2020SNDi of entire street network
SinwonHwanghae-namdo (Region)North Korea (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Sinwon plotted against Hwanghae-namdo and North Korea. The SNDi of new construction in Sinwon rose steadily, compared to Hwanghae-namdo which followed a zig-zag trend with an overall increase and North Korea which peaked in 1976-1990. Most recently, Sinwon's incremental SNDi rose from 7.3 to 7.61 between 1991-2005 and 2006-2020. In terms of the aggregate network, Sinwon ranked 11th out of 15 cities in Hwanghae-namdo and 33rd out of 92 in North Korea as of 2020.

New Street Additions (2006–2020)

SNDi value
7.61
Rank in North Korea
76th of 92
Rank in Hwanghae-namdo
11th of 15

Entire Network (Aggregate)

SNDi value
4.73
Rank in North Korea
33rd of 92
Rank in Hwanghae-namdo
11th of 15

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

What about similarly populated cities?

2468<19751976–19901991–20052006–2020SNDi of street additions
2468<19751976–19901991–20052006–2020SNDi of entire street network
SinwonNampaRudrapur

In new street additions, Sinwon built increasingly disconnected streets over time, while Nampa built increasingly disconnected streets from 1975 through 1991-2005, then improved and Rudrapur fluctuated in its street-construction patterns. For the full network, Sinwon and Nampa both became progressively more disconnected, while Rudrapur fluctuated in connectivity. Notably, Sinwon had a more sprawly network than Rudrapur in 1975 but the two have since reversed their relative ranking.