Anfu 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 Anfu plotted against Sichuan and China. The SNDi of new construction in Anfu peaked in 1976-1990, compared to Sichuan which followed a zig-zag trend with an overall increase and China which followed a zig-zag trend with an overall increase. Most recently, Anfu's incremental SNDi fell from 4.33 to 3.06 between 1991-2005 and 2006-2020. In terms of the aggregate network, Anfu ranked 75th out of 98 cities in Sichuan and 1593rd out of 1843 in China as of 2020.

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

What about similarly populated cities?

• Funan, China
• Tessaoua, Niger
• Oldenburg, Germany
• Miryalaguda, India
• Renukoot, India
• Wenlan, China

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