Thanh Hoá 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 Thanh Hoá plotted against Thanh Hóa and Vietnam. The SNDi of new construction in Thanh Hoá peaked in 1976-1990, compared to Thanh Hóa which followed a zig-zag trend with an overall increase and Vietnam which rose steadily. Most recently, Thanh Hoá's incremental SNDi fell from 3.62 to 2.76 between 1991-2005 and 2006-2020. In terms of the aggregate network, Thanh Hoá ranked 2nd out of 4 cities in Thanh Hóa and 28th 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?

• Vadalur, India
• Sincelejo, Colombia
• Shivpuri, India
• Moulvibazar, Bangladesh
• Domariaganj, India
• Kongolo, Democratic Republic of the Congo

In new street additions, Thanh Hoá built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Vadalur built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns and Moulvibazar built increasingly disconnected streets from 1975 through 1991-2005, then improved. For the full network, Thanh Hoá grew more disconnected from 1975 through 1976-1990, then improved, while Vadalur became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards and Moulvibazar became progressively more disconnected. Thanh Hoá and Vadalur have been converging in their street-network character since 1975.