Joetsu in context: Street-network sprawl trends
Joetsu in context
The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Joetsu plotted against Niigata and Japan. The SNDi of new construction in Joetsu peaked in 1976-1990, compared to Niigata which followed a zig-zag trend with an overall decrease and Japan which followed a zig-zag trend with an overall increase. Most recently, Joetsu's incremental SNDi fell from 2.02 to 1.94 between 1991-2005 and 2006-2020. In terms of the aggregate network, Joetsu ranked 4th out of 5 cities in Niigata and 42nd out of 135 in Japan as of 2020.
New Street Additions (2006–2020)
- SNDi value
- 1.94
- Rank in Japan
- 22nd of 135
- Rank in Niigata
- 3rd of 5
Entire Network (Aggregate)
- SNDi value
- 2.03
- Rank in Japan
- 42nd of 135
- Rank in Niigata
- 4th of 5
Rankings go from most connected to most disconnected — rank 1 is the most connected.
What about similarly populated cities?
- Houndé, Burkina Faso
- Quibala, Angola
- Karangampel, Indonesia
- Melilla, Spain
- Birampur, Bangladesh
- Lakhna, India
In new street additions, Joetsu built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Houndé built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns and Melilla built increasingly disconnected streets from 1975 through 1991-2005, then improved. For the full network, Joetsu grew more disconnected from 1975 through 1976-1990, then improved, while Houndé became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards and Melilla became progressively more disconnected. Notably, Joetsu had a more sprawly network than Melilla in 1975 but the two have since reversed their relative ranking.