Fukuyama in context: Street-network sprawl trends

Fukuyama in context

22.533.54<19751976–19901991–20052006–2020SNDi of street additions
22.533.54<19751976–19901991–20052006–2020SNDi of entire street network
FukuyamaHiroshima (Region)Japan (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Fukuyama plotted against Hiroshima and Japan. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Fukuyama's incremental SNDi rose from 2.5 to 2.73 between 1991-2005 and 2006-2020. In terms of the aggregate network, Fukuyama ranked 1st out of 4 cities in Hiroshima and 50th out of 135 in Japan as of 2020.

New Street Additions (2006–2020)

SNDi value
2.73
Rank in Japan
76th of 135
Rank in Hiroshima
1st of 4

Entire Network (Aggregate)

SNDi value
2.13
Rank in Japan
50th of 135
Rank in Hiroshima
1st of 4

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

What about similarly populated cities?

1.622.42.8<19751976–19901991–20052006–2020SNDi of street additions
1.622.42.8<19751976–19901991–20052006–2020SNDi of entire street network
FukuyamaCiudad del EsteChangji/Sanji

In new street additions, Fukuyama and Ciudad del Este both fluctuated in its street-construction patterns, while Changji/Sanji built increasingly disconnected streets from 1975 through 1976-1990, then improved. For the full network, Fukuyama and Changji/Sanji both became progressively more disconnected, while Ciudad del Este fluctuated in connectivity. Notably, Fukuyama had a more sprawly network than Changji/Sanji in 1975 but the two have since reversed their relative ranking.