Kurume in context: Street-network sprawl trends

Kurume in context

2.12.42.73<19751976–19901991–20052006–2020SNDi of street additions
2.12.42.73<19751976–19901991–20052006–2020SNDi of entire street network
KurumeFukuoka (Region)Japan (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Kurume plotted against Fukuoka and Japan. While Fukuoka and Japan both followed a zig-zag trend with an overall increase, Kurume's new street additions followed a zig-zag trend with an overall increase. Most recently, Kurume's incremental SNDi rose from 2.68 to 3.05 between 1991-2005 and 2006-2020. In terms of the aggregate network, Kurume ranked 3rd out of 6 cities in Fukuoka and 82nd out of 135 in Japan as of 2020.

New Street Additions (2006–2020)

SNDi value
3.05
Rank in Japan
88th of 135
Rank in Fukuoka
3rd of 6

Entire Network (Aggregate)

SNDi value
2.48
Rank in Japan
82nd of 135
Rank in Fukuoka
3rd of 6

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

What about similarly populated cities?

2.12.83.54.2<19751976–19901991–20052006–2020SNDi of street additions
2.12.83.54.2<19751976–19901991–20052006–2020SNDi of entire street network
KurumeTiruchengoduArnhem

While Tiruchengodu and Arnhem both built increasingly disconnected streets over time, Kurume fluctuated in its street-construction patterns in new street additions. For the full street network, though, all three cities follow the same trend. Kurume and Tiruchengodu have been growing further apart in their street-network character since 1975.