Florence in context: Street-network sprawl trends

Florence in context

2.433.64.2<19751976–19901991–20052006–2020SNDi of street additions
2.433.64.2<19751976–19901991–20052006–2020SNDi of entire street network
FlorenceToscana (Region)Italy (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Florence plotted against Toscana and Italy. While Toscana and Italy both peaked in 1991-2005, Florence's new street additions peaked in 1991-2005. Most recently, Florence's incremental SNDi fell from 2.95 to 2.71 between 1991-2005 and 2006-2020. In terms of the aggregate network, Florence ranked 5th out of 7 cities in Toscana and 31st out of 88 in Italy as of 2020.

New Street Additions (2006–2020)

SNDi value
2.71
Rank in Italy
14th of 88
Rank in Toscana
1st of 7

Entire Network (Aggregate)

SNDi value
2.42
Rank in Italy
31st of 88
Rank in Toscana
5th of 7

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

What about similarly populated cities?

234567<19751976–19901991–20052006–2020SNDi of street additions
234567<19751976–19901991–20052006–2020SNDi of entire street network
FlorenceTulungagungAl Mushahidah

In new street additions, Florence built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Tulungagung built increasingly disconnected streets over time and Al Mushahidah built increasingly connected streets over time. For the full network, Florence and Tulungagung both became progressively more disconnected, while Al Mushahidah became progressively more connected. Florence and Tulungagung have been growing further apart in their street-network character since 1975.