Adiela 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 Adiela plotted against East Darfur and Sudan. The SNDi of new construction in Adiela was at its lowest in 1991-2005, compared to East Darfur which followed a zig-zag trend with an overall increase and Sudan which followed a zig-zag trend with an overall increase. Most recently, Adiela's incremental SNDi rose from 0.97 to 5.04 between 1991-2005 and 2006-2020. In terms of the aggregate network, Adiela ranked 7th out of 7 cities in East Darfur and 76th out of 78 in Sudan as of 2020.

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

What about similarly populated cities?

• Apeldoorn, Netherlands
• Hirosaki, Japan
• Zamora, México
• Saga, Japan
• Malumfashi, Nigeria
• Zeralda, Algeria

In new street additions, Adiela built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns, while Apeldoorn built increasingly disconnected streets over time and Saga built increasingly disconnected streets from 1975 through 1976-1990, then improved. For the full network, Adiela became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards, while Apeldoorn became progressively more disconnected and Saga grew more disconnected from 1975 through 1991-2005, then improved. Adiela and Apeldoorn have been converging in their street-network character since 1975.