Kofu in context: Street-network sprawl trends

Kofu in context

2.12.42.7<19751976–19901991–20052006–2020SNDi of street additions
2.12.42.7<19751976–19901991–20052006–2020SNDi of entire street network
KofuYamanashi (Region)Japan (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Kofu plotted against Yamanashi and Japan. The SNDi of new construction in Kofu peaked in 1976-1990, compared to Yamanashi which followed a zig-zag trend with an overall increase and Japan which followed a zig-zag trend with an overall increase. Most recently, Kofu's incremental SNDi fell from 2.15 to 2.15 between 1991-2005 and 2006-2020. In terms of the aggregate network, Kofu ranked 1st out of 1 cities in Yamanashi and 40th out of 135 in Japan as of 2020.

New Street Additions (2006–2020)

SNDi value
2.15
Rank in Japan
36th of 135
Rank in Yamanashi
1st of 1

Entire Network (Aggregate)

SNDi value
2.0
Rank in Japan
40th of 135
Rank in Yamanashi
1st of 1

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
KofuChiniotIndianapolis

In new street additions, Kofu built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Chiniot built increasingly disconnected streets over time and Indianapolis built increasingly disconnected streets from 1975 through 1991-2005, then improved. For the full street network, though, all three cities follow the same trend. Kofu and Chiniot have been growing further apart in their street-network character since 1975.