Jilong 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 Jilong plotted against Guangdong and China. The SNDi of new construction in Jilong was at its lowest in 1976-1990, compared to Guangdong which followed a zig-zag trend with an overall increase and China which followed a zig-zag trend with an overall increase. Most recently, Jilong's incremental SNDi rose from 8.12 to 8.89 between 1991-2005 and 2006-2020. In terms of the aggregate network, Jilong ranked 131st out of 133 cities in Guangdong and 1829th 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?

• Dongkou, China
• Bijoynagar, Bangladesh
• Ginsi, Ethiopia
• Perus, Brazil
• Wurno, Nigeria
• Map Ta Phut, Thailand

While Dongkou and Perus both fluctuated in its street-construction patterns, Jilong built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns in new street additions. For the full network, Jilong became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards, while Dongkou fluctuated in connectivity and Perus became progressively more disconnected. Jilong and Dongkou have been growing further apart in their street-network character since 1975.