Aboh 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 Aboh plotted against Imo and Nigeria. The SNDi of new construction in Aboh rose steadily, compared to Imo which rose steadily and Nigeria which followed a zig-zag trend with an overall increase. Most recently, Aboh's incremental SNDi rose from 3.18 to 3.37 between 1991-2005 and 2006-2020. In terms of the aggregate network, Aboh ranked 1st out of 5 cities in Imo and 146th 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?

• Natal, Brazil
• Berhampore, India
• Naha, Japan
• Tianjia‘an, China
• Tainan, Taiwan
• Suhaj, Egypt

In new street additions, Aboh built increasingly disconnected streets over time, while Natal fluctuated in its street-construction patterns and Tianjia‘an built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns. For the full network, Aboh and Natal both became progressively more disconnected, while Tianjia‘an became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards. Aboh and Natal have been growing further apart in their street-network character since 1975.