Oita in context: Street-network sprawl trends

Oita in context

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

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Oita plotted against Japan. Both Oita and Japan follow the same trend. Most recently, Oita's incremental SNDi rose from 3.21 to 3.61 between 1991-2005 and 2006-2020. In terms of the aggregate network, Oita ranked 99th out of 135 in Japan as of 2020.

New Street Additions (2006–2020)

SNDi value
3.61
Rank in Japan
104th of 135

Entire Network (Aggregate)

SNDi value
2.63
Rank in Japan
99th of 135

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

What about similarly populated cities?

22.533.5<19751976–19901991–20052006–2020SNDi of street additions
22.533.5<19751976–19901991–20052006–2020SNDi of entire street network
OitaDaqingHuidong

In new street additions, Oita fluctuated in its street-construction patterns, while Daqing built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns and Huidong built increasingly disconnected streets over time. For the full network, Oita and Huidong both became progressively more disconnected, while Daqing became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards. Notably, Oita had a more sprawly network than Huidong in 1975 but the two have since reversed their relative ranking.