Koi in context: Street-network sprawl trends

Koi in context

1234<19751976–19901991–20052006–2020SNDi of street additions
1234<19751976–19901991–20052006–2020SNDi of entire street network
KoiKaduna (Region)Nigeria (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Koi plotted against Kaduna and Nigeria. While Kaduna and Nigeria both followed a zig-zag trend with an overall increase, Koi's new street additions followed a zig-zag trend with an overall increase. Most recently, Koi's incremental SNDi rose from 2.22 to 3.63 between 1991-2005 and 2006-2020. In terms of the aggregate network, Koi ranked 5th out of 11 cities in Kaduna and 90th out of 422 in Nigeria as of 2020.

New Street Additions (2006–2020)

SNDi value
3.63
Rank in Nigeria
155th of 422
Rank in Kaduna
9th of 11

Entire Network (Aggregate)

SNDi value
2.17
Rank in Nigeria
90th of 422
Rank in Kaduna
5th of 11

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

What about similarly populated cities?

2468<19751976–19901991–20052006–2020SNDi of street additions
2468<19751976–19901991–20052006–2020SNDi of entire street network
KoiYakomaIquitos

In new street additions, Koi and Iquitos both fluctuated in its street-construction patterns, while Yakoma built increasingly disconnected streets over time. For the full street network, though, all three cities follow the same trend. Koi and Iquitos have been converging in their street-network character since 1975.