Annecy in context: Street-network sprawl trends

Annecy in context

2.83.54.2<19751976–19901991–20052006–2020SNDi of street additions
2.83.54.2<19751976–19901991–20052006–2020SNDi of entire street network
AnnecyAuvergne-Rhone-Alpes (Region)France (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Annecy plotted against Auvergne-Rhône-Alpes and France. The SNDi of new construction in Annecy followed a zig-zag trend with an overall increase, compared to Auvergne-Rhône-Alpes which peaked in 1991-2005 and France which peaked in 1991-2005. Most recently, Annecy's incremental SNDi rose from 4.34 to 4.63 between 1991-2005 and 2006-2020. In terms of the aggregate network, Annecy ranked 7th out of 8 cities in Auvergne-Rhône-Alpes and 63rd out of 73 in France as of 2020.

New Street Additions (2006–2020)

SNDi value
4.63
Rank in France
60th of 73
Rank in Auvergne-Rhône-Alpes
7th of 8

Entire Network (Aggregate)

SNDi value
3.07
Rank in France
63rd of 73
Rank in Auvergne-Rhône-Alpes
7th of 8

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

What about similarly populated cities?

2.12.83.54.24.9<19751976–19901991–20052006–2020SNDi of street additions
2.12.83.54.24.9<19751976–19901991–20052006–2020SNDi of entire street network
AnnecyBeppuSabzevar

In new street additions, Annecy fluctuated in its street-construction patterns, while Beppu built increasingly disconnected streets over time and Sabzevar fluctuated in its street-construction patterns. For the full network, Annecy and Beppu both became progressively more disconnected, while Sabzevar became progressively more connected. Notably, Annecy had a more connected network than Sabzevar in 1975 but the two have since reversed their relative ranking.