Reims 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 Reims plotted against Grand Est and France. While Grand Est and France both peaked in 1991-2005, Reims's new street additions peaked in 1991-2005. Most recently, Reims's incremental SNDi fell from 3.13 to 2.94 between 1991-2005 and 2006-2020. In terms of the aggregate network, Reims ranked 4th out of 7 cities in Grand Est and 18th out of 73 in France as of 2020.

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

What about similarly populated cities?

• Long Thành, Vietnam
• Phenhara, India
• Newcastle, Australia
• Fengcheng, China
• Indaiatuba, Brazil
• Tambacounda, Senegal

In new street additions, Reims built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Long Thành built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns and Fengcheng built increasingly disconnected streets from 1975 through 1976-1990, then improved. For the full network, Reims and Fengcheng both became progressively more disconnected, while Long Thành became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards. Notably, Reims had a more sprawly network than Fengcheng in 1975 but the two have since reversed their relative ranking.