Darou Khoudoss 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 Darou Khoudoss plotted against Thiès and Senegal. The SNDi of new construction in Darou Khoudoss rose steadily, compared to Thiès which followed a zig-zag trend with an overall increase and Senegal which followed a zig-zag trend with an overall increase. Most recently, Darou Khoudoss's incremental SNDi rose from 1.55 to 1.88 between 1991-2005 and 2006-2020. In terms of the aggregate network, Darou Khoudoss ranked 4th out of 4 cities in Thiès and 17th out of 25 in Senegal as of 2020.

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

What about similarly populated cities?

• Tlapa de Comonfort, México
• Bhatara, Bangladesh
• Jingxian, China
• Umm Qasr, Iraq
• Cedar Rapids, United States
• Bistrița, Romania

In new street additions, Darou Khoudoss and Tlapa de Comonfort both built increasingly disconnected streets over time, while Umm Qasr built increasingly disconnected streets from 1975 through 1976-1990, then improved. For the full street network, though, all three cities follow the same trend. Darou Khoudoss and Tlapa de Comonfort have been growing further apart in their street-network character since 1975.