Pohang-si in context: Street-network sprawl trends

Pohang-si in context

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

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Pohang-si plotted against Gyeongsangbuk-do and South Korea. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Pohang-si's incremental SNDi rose from 1.72 to 2.54 between 1991-2005 and 2006-2020. In terms of the aggregate network, Pohang-si ranked 2nd out of 4 cities in Gyeongsangbuk-do and 10th out of 49 in South Korea as of 2020.

New Street Additions (2006–2020)

SNDi value
2.54
Rank in South Korea
20th of 49
Rank in Gyeongsangbuk-do
4th of 4

Entire Network (Aggregate)

SNDi value
1.59
Rank in South Korea
10th of 49
Rank in Gyeongsangbuk-do
2nd of 4

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
Pohang-siChengdeGeneva

In new street additions, Pohang-si fluctuated in its street-construction patterns, while Chengde built increasingly disconnected streets over time and Geneva built increasingly disconnected streets from 1975 through 1976-1990, then improved. For the full street network, though, all three cities follow the same trend. Pohang-si and Chengde have been growing further apart in their street-network character since 1975.