Toulouse in context: Street-network sprawl trends

Toulouse in context

2.533.54<19751976–19901991–20052006–2020SNDi of street additions
2.533.54<19751976–19901991–20052006–2020SNDi of entire street network
ToulouseOccitanie (Region)France (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Toulouse plotted against Occitanie and France. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Toulouse's incremental SNDi fell from 3.33 to 3.16 between 1991-2005 and 2006-2020. In terms of the aggregate network, Toulouse ranked 3rd out of 5 cities in Occitanie and 40th out of 73 in France as of 2020.

New Street Additions (2006–2020)

SNDi value
3.16
Rank in France
34th of 73
Rank in Occitanie
4th of 5

Entire Network (Aggregate)

SNDi value
2.63
Rank in France
40th of 73
Rank in Occitanie
3rd of 5

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

What about similarly populated cities?

2.12.83.54.2<19751976–19901991–20052006–2020SNDi of street additions
2.12.83.54.2<19751976–19901991–20052006–2020SNDi of entire street network
ToulouseHsinchuAndijon

While Hsinchu and Andijon both built increasingly disconnected streets over time, Toulouse built increasingly disconnected streets from 1975 through 1991-2005, then improved in new street additions. For the full street network, though, all three cities follow the same trend.