Quảng Ngãi 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 Quảng Ngãi plotted against Vietnam. The SNDi of new construction in Quảng Ngãi was at its lowest in 1991-2005, while Vietnam rose steadily. Most recently, Quảng Ngãi's incremental SNDi rose from 4.72 to 5.21 between 1991-2005 and 2006-2020. In terms of the aggregate network, Quảng Ngãi ranked 101st 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?

• Port-de-Paix, Haiti
• Khmelnytskyi, Ukraine
• Gamboru, Nigeria
• Narmashir, Iran
• Tete, Mozambique
• Al-Santa, Egypt

In new street additions, Quảng Ngãi built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns, while Port-de-Paix built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns and Narmashir built increasingly connected streets over time. For the full network, Quảng Ngãi became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards, while Port-de-Paix became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards and Narmashir became progressively more connected. Quảng Ngãi and Port-de-Paix have been converging in their street-network character since 1975.