Jeju-si in context: Street-network sprawl trends

Jeju-si in context

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

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Jeju-si plotted against Jeju and South Korea. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Jeju-si's incremental SNDi rose from 1.77 to 2.05 between 1991-2005 and 2006-2020. In terms of the aggregate network, Jeju-si ranked 1st out of 1 cities in Jeju and 6th out of 49 in South Korea as of 2020.

New Street Additions (2006–2020)

SNDi value
2.05
Rank in South Korea
7th of 49
Rank in Jeju
1st of 1

Entire Network (Aggregate)

SNDi value
1.52
Rank in South Korea
6th of 49
Rank in Jeju
1st of 1

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

What about similarly populated cities?

123456<19751976–19901991–20052006–2020SNDi of street additions
123456<19751976–19901991–20052006–2020SNDi of entire street network
Jeju-siGirardotChengwu

Jeju-si, Girardot, and Chengwu all fluctuated in its street-construction patterns in new street construction. For the full network, Jeju-si and Chengwu both became progressively more disconnected, while Girardot fluctuated in connectivity. Jeju-si and Chengwu have been growing further apart in their street-network character since 1975.