Hui'an 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 Hui'an plotted against Fujian and China. The SNDi of new construction in Hui'an 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, Hui'an's incremental SNDi fell from 3.45 to 2.92 between 1991-2005 and 2006-2020. In terms of the aggregate network, Hui'an ranked 39th out of 75 cities in Fujian and 1217th 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?

• Danyang City, China
• Al-Manshah, Egypt
• Gaozhou, China
• Jamalpur, Bangladesh
• Jizzakh, Uzbekistan
• Sosnowiec, Poland

In new street additions, Hui'an and Danyang City both built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Jamalpur built increasingly disconnected streets over time. For the full network, Hui'an grew more disconnected from 1975 through 1991-2005, then improved, while Danyang City grew more disconnected from 1975 through 1976-1990, then improved and Jamalpur became progressively more disconnected. Hui'an and Danyang City have been growing further apart in their street-network character since 1975.