Le Tampon 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 Le Tampon plotted against Saint-Pierre and Réunion. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Le Tampon's incremental SNDi rose from 5.02 to 6.11 between 1991-2005 and 2006-2020. In terms of the aggregate network, Le Tampon ranked 1st out of 1 cities in Saint-Pierre and 2nd out of 4 in Réunion as of 2020.

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

What about similarly populated cities?

• Xian'an, China
• Itabaiana, Brazil
• Jaén, Peru
• Wikong, Democratic Republic of the Congo
• Itapeva, Brazil
• Sartu, China

While Xian'an and Wikong both built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns, Le Tampon built increasingly disconnected streets over time in new street additions. Looking at the full network, Xian'an and Wikong both became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards, while Le Tampon became progressively more disconnected. Notably, Le Tampon had a more connected network than Xian'an in 1975 but the two have since reversed their relative ranking.