Chiping 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 Chiping plotted against Shandong and China. The SNDi of new construction in Chiping was at its lowest in 1976-1990, compared to Shandong which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Chiping's incremental SNDi rose from 1.17 to 1.2 between 1991-2005 and 2006-2020. In terms of the aggregate network, Chiping ranked 1st out of 124 cities in Shandong and 3rd 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?

• Sonsonate, El Salvador
• Zhongxiang, China
• Chengarchar, Bangladesh
• Foumban, Cameroon
• Dazhu, China
• Jagdishpur, India

In new street additions, Chiping built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns, while Sonsonate built increasingly disconnected streets over time and Foumban built increasingly disconnected streets from 1975 through 1991-2005, then improved. Looking at the full network, Sonsonate and Foumban both became progressively more disconnected, while Chiping became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards. Chiping and Sonsonate have been growing further apart in their street-network character since 1975.