Sinpho in context: Street-network sprawl trends

Sinpho in context

36912<19751976–19901991–20052006–2020SNDi of street additions
36912<19751976–19901991–20052006–2020SNDi of entire street network
SinphoHamgyong-namdo (Region)North Korea (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Sinpho plotted against Hamgyŏng-namdo and North Korea. The SNDi of new construction in Sinpho peaked in 1991-2005, compared to Hamgyŏng-namdo which peaked in 1991-2005 and North Korea which peaked in 1976-1990. Most recently, Sinpho's incremental SNDi fell from 12.12 to 3.8 between 1991-2005 and 2006-2020. In terms of the aggregate network, Sinpho ranked 3rd out of 11 cities in Hamgyŏng-namdo and 23rd out of 92 in North Korea as of 2020.

New Street Additions (2006–2020)

SNDi value
3.8
Rank in North Korea
23rd of 92
Rank in Hamgyŏng-namdo
4th of 11

Entire Network (Aggregate)

SNDi value
4.41
Rank in North Korea
23rd of 92
Rank in Hamgyŏng-namdo
3rd of 11

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

What about similarly populated cities?

36912<19751976–19901991–20052006–2020SNDi of street additions
36912<19751976–19901991–20052006–2020SNDi of entire street network
SinphoSimriYangcheng

In new street additions, Sinpho and Simri both built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Yangcheng built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns. For the full network, Sinpho grew more disconnected from 1975 through 1991-2005, then improved, while Simri became progressively more disconnected and Yangcheng became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards. Sinpho and Simri have been converging in their street-network character since 1975.