Dazhuang in context: Street-network sprawl trends

Dazhuang in context

22.42.83.2<19751976–19901991–20052006–2020SNDi of street additions
22.42.83.2<19751976–19901991–20052006–2020SNDi of entire street network
DazhuangTaichung (Region)Taiwan (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Dazhuang plotted against Taichung and Taiwan. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Dazhuang's incremental SNDi rose from 2.05 to 2.36 between 1991-2005 and 2006-2020. In terms of the aggregate network, Dazhuang ranked 2nd out of 2 cities in Taichung and 14th out of 21 in Taiwan as of 2020.

New Street Additions (2006–2020)

SNDi value
2.36
Rank in Taiwan
10th of 21
Rank in Taichung
1st of 2

Entire Network (Aggregate)

SNDi value
2.08
Rank in Taiwan
14th of 21
Rank in Taichung
2nd of 2

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

What about similarly populated cities?

1.51.82.12.42.7<19751976–19901991–20052006–2020SNDi of street additions
1.51.82.12.42.7<19751976–19901991–20052006–2020SNDi of entire street network
DazhuangWendengMiyun

Dazhuang, Wendeng, and Miyun all fluctuated in its street-construction patterns in new street construction. For the full network, Dazhuang and Miyun both became progressively more disconnected, while Wendeng fluctuated in connectivity. Notably, Dazhuang had a more sprawly network than Miyun in 1975 but the two have since reversed their relative ranking.