Okayama in context: Street-network sprawl trends

Okayama in context

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

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Okayama plotted against Japan. Both Okayama and Japan follow the same trend. Most recently, Okayama's incremental SNDi rose from 3.2 to 3.48 between 1991-2005 and 2006-2020. In terms of the aggregate network, Okayama ranked 98th out of 135 in Japan as of 2020.

New Street Additions (2006–2020)

SNDi value
3.48
Rank in Japan
101st of 135

Entire Network (Aggregate)

SNDi value
2.6
Rank in Japan
98th of 135

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

What about similarly populated cities?

1.82.433.6<19751976–19901991–20052006–2020SNDi of street additions
1.82.433.6<19751976–19901991–20052006–2020SNDi of entire street network
OkayamaSarvestanTeresina

In new street additions, Okayama and Teresina both fluctuated in its street-construction patterns, while Sarvestan built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns. For the full network, Okayama and Teresina both became progressively more disconnected, while Sarvestan became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards. Okayama and Teresina have been converging in their street-network character since 1975.