Chambéry 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 Chambéry plotted against Auvergne-Rhône-Alpes and France. The SNDi of new construction in Chambéry peaked in 1976-1990, compared to Auvergne-Rhône-Alpes which peaked in 1991-2005 and France which peaked in 1991-2005. Most recently, Chambéry's incremental SNDi fell from 4.32 to 3.84 between 1991-2005 and 2006-2020. In terms of the aggregate network, Chambéry ranked 8th out of 8 cities in Auvergne-Rhône-Alpes and 64th 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?

• Shanyin, China
• Anping, China
• Dadaab, Kenya
• Zhelin, China
• Shikarpur, India
• Yunan, China

In new street additions, Chambéry and Shanyin both built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Zhelin built increasingly disconnected streets over time. For the full network, Chambéry and Zhelin both became progressively more disconnected, while Shanyin grew more disconnected from 1975 through 1976-1990, then improved. Chambéry and Shanyin have been converging in their street-network character since 1975.