Hưng Yên 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 Hưng Yên plotted against Vietnam. The SNDi of new construction in Hưng Yên followed a zig-zag trend with an overall increase, while Vietnam rose steadily. Most recently, Hưng Yên's incremental SNDi fell from 3.21 to 3.18 between 1991-2005 and 2006-2020. In terms of the aggregate network, Hưng Yên ranked 16th out of 126 in Vietnam as of 2020.

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

What about similarly populated cities?

• Kuitan, China
• She, China
• Parvathipuram, India
• Emam Saheb, Afghanistan
• Xiangyun, China
• Nehe, China

In new street additions, Hưng Yên fluctuated in its street-construction patterns, while Kuitan fluctuated in its street-construction patterns and Emam Saheb built increasingly disconnected streets from 1975 through 1991-2005, then improved. For the full network, Hưng Yên became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards, while Kuitan became progressively more disconnected and Emam Saheb grew more disconnected from 1975 through 1991-2005, then improved. Notably, Hưng Yên had a more sprawly network than Kuitan in 1975 but the two have since reversed their relative ranking.