Yên Định 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 Yên Định plotted against Nam Định and Vietnam. The SNDi of new construction in Yên Định was at its lowest in 1976-1990, compared to Nam Định which peaked in 1991-2005 and Vietnam which rose steadily. Most recently, Yên Định's incremental SNDi rose from 3.37 to 3.94 between 1991-2005 and 2006-2020. In terms of the aggregate network, Yên Định ranked 1st out of 4 cities in Nam Định and 22nd 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?

• Focșani, Romania
• Bafwasende, Democratic Republic of the Congo
• Ganpatganj, India
• Jumba la Mtwana, Kenya
• Al Dhahir, United Arab Emirates
• Unguwar Mahaukci, Nigeria

In new street additions, Yên Định and Jumba la Mtwana both built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns, while Focșani built increasingly disconnected streets over time. For the full network, Yên Định and Jumba la Mtwana both became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards, while Focșani became progressively more disconnected. Yên Định and Jumba la Mtwana have been growing further apart in their street-network character since 1975.