Chongnam in context: Street-network sprawl trends

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Chongnam plotted against P'yŏngan-namdo and North Korea. While P'yŏngan-namdo and North Korea both peaked in 1976-1990, Chongnam's new street additions peaked in 1976-1990. Most recently, Chongnam's incremental SNDi fell from 3.83 to 3.55 between 1991-2005 and 2006-2020. In terms of the aggregate network, Chongnam ranked 8th out of 21 cities in P'yŏngan-namdo and 38th out of 92 in North Korea as of 2020.

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

What about similarly populated cities?

• Dhanaura, India
• Masohi, Indonesia
• Santa Barbara, United States
• Singida, Tanzania
• Jing, China
• Dolvi, India

In new street additions, Chongnam built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Dhanaura built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns and Singida fluctuated in its street-construction patterns. For the full network, Chongnam grew more disconnected from 1975 through 1976-1990, then improved, while Dhanaura became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards and Singida fluctuated in connectivity. Chongnam and Dhanaura have been converging in their street-network character since 1975.