Geoje-si in context: Street-network sprawl trends

Geoje-si in context

1.522.53<19751976–19901991–20052006–2020SNDi of street additions
1.522.53<19751976–19901991–20052006–2020SNDi of entire street network
Geoje-siGyeongsangnam-do (Region)South Korea (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Geoje-si plotted against Gyeongsangnam-do and South Korea. The SNDi of new construction in Geoje-si rose steadily, compared to Gyeongsangnam-do which followed a zig-zag trend with an overall increase and South Korea which followed a zig-zag trend with an overall increase. Most recently, Geoje-si's incremental SNDi rose from 2.3 to 2.89 between 1991-2005 and 2006-2020. In terms of the aggregate network, Geoje-si ranked 4th out of 10 cities in Gyeongsangnam-do and 26th out of 49 in South Korea as of 2020.

New Street Additions (2006–2020)

SNDi value
2.89
Rank in South Korea
31st of 49
Rank in Gyeongsangnam-do
4th of 10

Entire Network (Aggregate)

SNDi value
1.91
Rank in South Korea
26th of 49
Rank in Gyeongsangnam-do
4th of 10

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

What about similarly populated cities?

4812<19751976–19901991–20052006–2020SNDi of street additions
4812<19751976–19901991–20052006–2020SNDi of entire street network
Geoje-siHuaikouKiratpur

In new street additions, Geoje-si built increasingly disconnected streets over time, while Huaikou built increasingly disconnected streets from 1975 through 1976-1990, then improved and Kiratpur built increasingly disconnected streets from 1975 through 1991-2005, then improved. For the full network, Geoje-si became progressively more disconnected, while Huaikou grew more disconnected from 1975 through 1976-1990, then improved and Kiratpur grew more disconnected from 1975 through 1991-2005, then improved. Geoje-si and Huaikou have been converging in their street-network character since 1975.