Iperu in context: Street-network sprawl trends

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Iperu plotted against Ogun and Nigeria. The SNDi of new construction in Iperu peaked in 1991-2005, compared to Ogun which rose steadily and Nigeria which followed a zig-zag trend with an overall increase. Most recently, Iperu's incremental SNDi fell from 5.09 to 5.02 between 1991-2005 and 2006-2020. In terms of the aggregate network, Iperu ranked 8th out of 16 cities in Ogun and 211th out of 422 in Nigeria as of 2020.

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

What about similarly populated cities?

• Pervouralsk, Russia
• Mashan, China
• Belize City, Belize
• Meichuan, China
• Hedong, China
• Avaré, Brazil

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