Sigli 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 Sigli plotted against Aceh and Indonesia. The SNDi of new construction in Sigli peaked in 1976-1990, compared to Aceh which rose steadily and Indonesia which rose steadily. Most recently, Sigli's incremental SNDi fell from 4.28 to 4.25 between 1991-2005 and 2006-2020. In terms of the aggregate network, Sigli ranked 5th out of 8 cities in Aceh and 141st out of 366 in Indonesia as of 2020.

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

What about similarly populated cities?

• Tadjoura, Djibouti
• Fufeng, China
• Kafr Awn, Egypt
• Solok, Indonesia
• Floridablanca, Philippines
• Siedlce, Poland

In new street additions, Sigli built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Tadjoura built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns and Solok built increasingly disconnected streets from 1975 through 1991-2005, then improved. For the full network, Sigli and Solok both became progressively more disconnected, while Tadjoura became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards. Notably, Sigli had a more connected network than Tadjoura in 1975 but the two have since reversed their relative ranking.