Kamisu in context: Street-network sprawl trends

Kamisu in context

1.82.12.42.7<19751976–19901991–20052006–2020SNDi of street additions
1.82.12.42.7<19751976–19901991–20052006–2020SNDi of entire street network
KamisuIbaraki (Region)Japan (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Kamisu plotted against Ibaraki and Japan. While Ibaraki and Japan both followed a zig-zag trend with an overall increase, Kamisu's new street additions followed a zig-zag trend with an overall decrease. Most recently, Kamisu's incremental SNDi rose from 1.84 to 1.87 between 1991-2005 and 2006-2020. In terms of the aggregate network, Kamisu ranked 2nd out of 7 cities in Ibaraki and 31st out of 135 in Japan as of 2020.

New Street Additions (2006–2020)

SNDi value
1.87
Rank in Japan
16th of 135
Rank in Ibaraki
2nd of 7

Entire Network (Aggregate)

SNDi value
1.9
Rank in Japan
31st of 135
Rank in Ibaraki
2nd of 7

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

What about similarly populated cities?

2.12.83.5<19751976–19901991–20052006–2020SNDi of street additions
2.12.83.5<19751976–19901991–20052006–2020SNDi of entire street network
KamisuBekonangGuan Tan Cun

In new street additions, Kamisu fluctuated in its street-construction patterns, while Bekonang built increasingly disconnected streets from 1975 through 1991-2005, then improved and 官潭村 built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns. For the full network, Kamisu grew more disconnected from 1975 through 1976-1990, then improved, while Bekonang became progressively more disconnected and 官潭村 became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards.