Matsumoto in context: Street-network sprawl trends

Matsumoto in context

2.22.42.62.8<19751976–19901991–20052006–2020SNDi of street additions
2.22.42.62.8<19751976–19901991–20052006–2020SNDi of entire street network
MatsumotoNagano (Region)Japan (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Matsumoto plotted against Nagano and Japan. The SNDi of new construction in Matsumoto peaked in 1991-2005, compared to Nagano which peaked in 1976-1990 and Japan which followed a zig-zag trend with an overall increase. Most recently, Matsumoto's incremental SNDi fell from 2.33 to 2.28 between 1991-2005 and 2006-2020. In terms of the aggregate network, Matsumoto ranked 3rd out of 6 cities in Nagano and 59th out of 135 in Japan as of 2020.

New Street Additions (2006–2020)

SNDi value
2.28
Rank in Japan
46th of 135
Rank in Nagano
2nd of 6

Entire Network (Aggregate)

SNDi value
2.2
Rank in Japan
59th of 135
Rank in Nagano
3rd of 6

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

What about similarly populated cities?

2468<19751976–19901991–20052006–2020SNDi of street additions
2468<19751976–19901991–20052006–2020SNDi of entire street network
MatsumotoPleikuDinhata

In new street additions, Matsumoto built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Pleiku fluctuated in its street-construction patterns and Dinhata built increasingly disconnected streets over time. For the full street network, though, all three cities follow the same trend. Matsumoto and Pleiku have been growing further apart in their street-network character since 1975.