Savona in context: Street-network sprawl trends

Savona in context

46810<19751976–19901991–20052006–2020SNDi of street additions
46810<19751976–19901991–20052006–2020SNDi of entire street network
SavonaLiguria (Region)Italy (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Savona plotted against Liguria and Italy. The SNDi of new construction in Savona followed a zig-zag trend with an overall increase, compared to Liguria which followed a zig-zag trend with an overall increase and Italy which peaked in 1991-2005. Most recently, Savona's incremental SNDi rose from 5.61 to 9.46 between 1991-2005 and 2006-2020. In terms of the aggregate network, Savona ranked 1st out of 3 cities in Liguria and 66th out of 88 in Italy as of 2020.

New Street Additions (2006–2020)

SNDi value
9.46
Rank in Italy
87th of 88
Rank in Liguria
3rd of 3

Entire Network (Aggregate)

SNDi value
3.26
Rank in Italy
66th of 88
Rank in Liguria
1st of 3

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

What about similarly populated cities?

246810<19751976–19901991–20052006–2020SNDi of street additions
246810<19751976–19901991–20052006–2020SNDi of entire street network
SavonaRugbyNeemrana

In new street additions, Savona and Neemrana both fluctuated in its street-construction patterns, while Rugby built increasingly disconnected streets from 1975 through 1991-2005, then improved. For the full network, Savona and Rugby both became progressively more disconnected, while Neemrana fluctuated in connectivity. Savona and Neemrana have been converging in their street-network character since 1975.