Ô-á-liâu / Kezihliao in context: Street-network sprawl trends

O-a-liau / Kezihliao in context

22.533.5<19751976–19901991–20052006–2020SNDi of street additions
22.533.5<19751976–19901991–20052006–2020SNDi of entire street network
O-a-liau / KezihliaoKaohsiung (Region)Taiwan (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Ô-á-liâu / Kezihliao plotted against Kaohsiung and Taiwan. The SNDi of new construction in Ô-á-liâu / Kezihliao peaked in 1991-2005, compared to Kaohsiung which followed a zig-zag trend with an overall increase and Taiwan which followed a zig-zag trend with an overall increase. Most recently, Ô-á-liâu / Kezihliao's incremental SNDi fell from 2.64 to 2.08 between 1991-2005 and 2006-2020. In terms of the aggregate network, Ô-á-liâu / Kezihliao ranked 1st out of 2 cities in Kaohsiung and 12th out of 21 in Taiwan as of 2020.

New Street Additions (2006–2020)

SNDi value
2.08
Rank in Taiwan
5th of 21
Rank in Kaohsiung
1st of 2

Entire Network (Aggregate)

SNDi value
2.02
Rank in Taiwan
12th of 21
Rank in Kaohsiung
1st of 2

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
O-a-liau / KezihliaoGreensboroWellington

In new street additions, Ô-á-liâu / Kezihliao and Wellington both built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Greensboro built increasingly disconnected streets over time. For the full street network, though, all three cities follow the same trend. Ô-á-liâu / Kezihliao and Greensboro have been growing further apart in their street-network character since 1975.