Phú Mỹ 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 Phú Mỹ plotted against Bà Rịa - Vũng Tàu and Vietnam. The SNDi of new construction in Phú Mỹ was at its lowest in 1976-1990, compared to Bà Rịa - Vũng Tàu which followed a zig-zag trend with an overall increase and Vietnam which rose steadily. Most recently, Phú Mỹ's incremental SNDi rose from 3.65 to 4.14 between 1991-2005 and 2006-2020. In terms of the aggregate network, Phú Mỹ ranked 3rd out of 4 cities in Bà Rịa - Vũng Tàu as of 2020.

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

What about similarly populated cities?

• Yuanzhou, China
• Chiro, Ethiopia
• Nikli, Bangladesh
• Larache, Morocco
• Cabudare, Venezuela
• Piedras Negras, México

In new street additions, Phú Mỹ built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns, while Yuanzhou fluctuated in its street-construction patterns and Larache built increasingly disconnected streets over time. For the full network, Phú Mỹ became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards, while Yuanzhou fluctuated in connectivity and Larache became progressively more disconnected. Notably, Phú Mỹ had a more sprawly network than Yuanzhou in 1975 but the two have since reversed their relative ranking.