Pinghe 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 Pinghe plotted against Fujian and China. The SNDi of new construction in Pinghe peaked in 1976-1990, compared to Fujian which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Pinghe's incremental SNDi fell from 3.01 to 2.8 between 1991-2005 and 2006-2020. In terms of the aggregate network, Pinghe ranked 26th out of 75 cities in Fujian and 929th 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?

• Salehia, Egypt
• Coronel Fabriciano, Brazil
• Gafsa, Tunisia
• Weiyuan, China
• Bagelen, Indonesia
• Zhilkino, Russia

In new street additions, Pinghe built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Salehia built increasingly disconnected streets over time and Weiyuan built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns. For the full network, Pinghe grew more disconnected from 1975 through 1991-2005, then improved, while Salehia became progressively more disconnected and Weiyuan became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards.