Unjon in context: Street-network sprawl trends

Unjon in context

4.55.46.37.2<19751976–19901991–20052006–2020SNDi of street additions
4.55.46.37.2<19751976–19901991–20052006–2020SNDi of entire street network
UnjonP'yongan-bukto (Region)North Korea (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Unjon plotted against P'yŏngan-bukto and North Korea. The SNDi of new construction in Unjon followed a zig-zag trend with an overall increase, compared to P'yŏngan-bukto which rose steadily and North Korea which peaked in 1976-1990. Most recently, Unjon's incremental SNDi rose from 4.24 to 5.37 between 1991-2005 and 2006-2020. In terms of the aggregate network, Unjon ranked 5th out of 16 cities in P'yŏngan-bukto and 25th out of 92 in North Korea as of 2020.

New Street Additions (2006–2020)

SNDi value
5.37
Rank in North Korea
49th of 92
Rank in P'yŏngan-bukto
8th of 16

Entire Network (Aggregate)

SNDi value
4.48
Rank in North Korea
25th of 92
Rank in P'yŏngan-bukto
5th of 16

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
UnjonSanta CruzMontepuez

In new street additions, Unjon fluctuated in its street-construction patterns, while Santa Cruz built increasingly disconnected streets from 1975 through 1976-1990, then improved and Montepuez built increasingly disconnected streets over time. Looking at the full network, Santa Cruz and Montepuez both became progressively more disconnected, while Unjon became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards.