Mobara in context: Street-network sprawl trends

Mobara 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
MobaraChiba (Region)Japan (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Mobara plotted against Chiba and Japan. The SNDi of new construction in Mobara peaked in 1991-2005, compared to Chiba which peaked in 1976-1990 and Japan which followed a zig-zag trend with an overall increase. Most recently, Mobara's incremental SNDi fell from 2.88 to 2.8 between 1991-2005 and 2006-2020. In terms of the aggregate network, Mobara ranked 3rd out of 3 cities in Chiba and 86th out of 135 in Japan as of 2020.

New Street Additions (2006–2020)

SNDi value
2.8
Rank in Japan
83rd of 135
Rank in Chiba
3rd of 3

Entire Network (Aggregate)

SNDi value
2.53
Rank in Japan
86th of 135
Rank in Chiba
3rd of 3

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

What about similarly populated cities?

12345<19751976–19901991–20052006–2020SNDi of street additions
12345<19751976–19901991–20052006–2020SNDi of entire street network
MobaraRocky PointEbocha

In new street additions, Mobara built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Rocky Point fluctuated in its street-construction patterns and Ebocha built increasingly disconnected streets over time. For the full network, Mobara and Ebocha both became progressively more disconnected, while Rocky Point grew more disconnected from 1975 through 1976-1990, then improved. Mobara and Ebocha have been growing further apart in their street-network character since 1975.