Saki in context: Street-network sprawl trends

Saki in context

2.12.83.54.2<19751976–19901991–20052006–2020SNDi of street additions
2.12.83.54.2<19751976–19901991–20052006–2020SNDi of entire street network
SakiOyo (Region)Nigeria (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Saki plotted against Oyo and Nigeria. The SNDi of new construction in Saki rose steadily, compared to Oyo which followed a zig-zag trend with an overall increase and Nigeria which followed a zig-zag trend with an overall increase. Most recently, Saki's incremental SNDi rose from 2.86 to 3.37 between 1991-2005 and 2006-2020. In terms of the aggregate network, Saki ranked 10th out of 15 cities in Oyo and 180th out of 422 in Nigeria as of 2020.

New Street Additions (2006–2020)

SNDi value
3.37
Rank in Nigeria
136th of 422
Rank in Oyo
7th of 15

Entire Network (Aggregate)

SNDi value
2.92
Rank in Nigeria
180th of 422
Rank in Oyo
10th of 15

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

What about similarly populated cities?

2.42.83.2<19751976–19901991–20052006–2020SNDi of street additions
2.42.83.2<19751976–19901991–20052006–2020SNDi of entire street network
SakiTaixingShouguang

In new street additions, Saki built increasingly disconnected streets over time, while Taixing built increasingly disconnected streets from 1975 through 1976-1990, then improved and Shouguang fluctuated in its street-construction patterns. For the full network, Saki and Shouguang both became progressively more disconnected, while Taixing grew more disconnected from 1975 through 1991-2005, then improved. Notably, Saki had a more connected network than Taixing in 1975 but the two have since reversed their relative ranking.