Kumbo 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 Kumbo plotted against Nord-Ouest and Cameroon. The SNDi of new construction in Kumbo peaked in 1991-2005, compared to Nord-Ouest which rose steadily and Cameroon which rose steadily. Most recently, Kumbo's incremental SNDi fell from 3.18 to 3.01 between 1991-2005 and 2006-2020. In terms of the aggregate network, Kumbo ranked 1st out of 4 cities in Nord-Ouest and 16th out of 44 in Cameroon as of 2020.

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

What about similarly populated cities?

• Gursahaiganj, India
• Shahdol, India
• Xiajin, China
• Emmiganuru, India
• Rongxian, China
• Bairgania, India

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