Takamatsu in context: Street-network sprawl trends

Takamatsu in context

22.533.5<19751976–19901991–20052006–2020SNDi of street additions
22.533.5<19751976–19901991–20052006–2020SNDi of entire street network
TakamatsuKagawa (Region)Japan (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Takamatsu plotted against Kagawa and Japan. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Takamatsu's incremental SNDi rose from 3.34 to 3.72 between 1991-2005 and 2006-2020. In terms of the aggregate network, Takamatsu ranked 2nd out of 2 cities in Kagawa and 123rd out of 135 in Japan as of 2020.

New Street Additions (2006–2020)

SNDi value
3.72
Rank in Japan
108th of 135
Rank in Kagawa
1st of 2

Entire Network (Aggregate)

SNDi value
3.07
Rank in Japan
123rd of 135
Rank in Kagawa
2nd of 2

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

What about similarly populated cities?

2.83.23.64<19751976–19901991–20052006–2020SNDi of street additions
2.83.23.64<19751976–19901991–20052006–2020SNDi of entire street network
TakamatsuTamkuhi Raj`Adan

In new street additions, Takamatsu and `Adan both fluctuated in its street-construction patterns, while Tamkuhi Raj built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns. For the full network, Takamatsu became progressively more disconnected, while Tamkuhi Raj became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards and `Adan fluctuated in connectivity.