Jangyon in context: Street-network sprawl trends

Jangyon in context

56789<19751976–19901991–20052006–2020SNDi of street additions
56789<19751976–19901991–20052006–2020SNDi of entire street network
JangyonHwanghae-namdo (Region)North Korea (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Jangyon plotted against Hwanghae-namdo and North Korea. The SNDi of new construction in Jangyon was at its lowest in 1991-2005, compared to Hwanghae-namdo which followed a zig-zag trend with an overall increase and North Korea which peaked in 1976-1990. Most recently, Jangyon's incremental SNDi rose from 5.67 to 8.93 between 1991-2005 and 2006-2020. In terms of the aggregate network, Jangyon ranked 14th out of 15 cities in Hwanghae-namdo and 76th out of 92 in North Korea as of 2020.

New Street Additions (2006–2020)

SNDi value
8.93
Rank in North Korea
81st of 92
Rank in Hwanghae-namdo
13th of 15

Entire Network (Aggregate)

SNDi value
6.43
Rank in North Korea
76th of 92
Rank in Hwanghae-namdo
14th 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
JangyonAdzopeKefamenanu

In new street additions, Jangyon built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns, while Adzopé fluctuated in its street-construction patterns and Kefamenanu built increasingly disconnected streets over time. Looking at the full network, Adzopé and Kefamenanu both became progressively more disconnected, while Jangyon became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards.