Perus 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 Perus plotted against São Paulo and Brazil. While São Paulo and Brazil both followed a zig-zag trend with an overall increase, Perus's new street additions followed a zig-zag trend with an overall increase. Most recently, Perus's incremental SNDi rose from 3.33 to 5.24 between 1991-2005 and 2006-2020. In terms of the aggregate network, Perus ranked 58th out of 76 cities in São Paulo and 280th out of 365 in Brazil as of 2020.

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

What about similarly populated cities?

• Jilong, China
• Dongkou, China
• Bijoynagar, Bangladesh
• Wurno, Nigeria
• Map Ta Phut, Thailand
• Piro, India

In new street additions, Perus fluctuated in its street-construction patterns, while Jilong built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns and Wurno built increasingly disconnected streets over time. Looking at the full network, Jilong and Wurno both became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards, while Perus became progressively more disconnected. Perus and Jilong have been growing further apart in their street-network character since 1975.