Acireale in context: Street-network sprawl trends

Acireale in context

2.43.244.8<19751976–19901991–20052006–2020SNDi of street additions
2.43.244.8<19751976–19901991–20052006–2020SNDi of entire street network
AcirealeSicily (Region)Italy (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Acireale plotted against Sicily and Italy. While Sicily and Italy both peaked in 1991-2005, Acireale's new street additions peaked in 1991-2005. Most recently, Acireale's incremental SNDi fell from 3.13 to 2.88 between 1991-2005 and 2006-2020. In terms of the aggregate network, Acireale ranked 4th out of 8 cities in Sicily and 40th out of 88 in Italy as of 2020.

New Street Additions (2006–2020)

SNDi value
2.88
Rank in Italy
22nd of 88
Rank in Sicily
1st of 8

Entire Network (Aggregate)

SNDi value
2.61
Rank in Italy
40th of 88
Rank in Sicily
4th of 8

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

What about similarly populated cities?

1.82.73.64.5<19751976–19901991–20052006–2020SNDi of street additions
1.82.73.64.5<19751976–19901991–20052006–2020SNDi of entire street network
AcirealeWuyi CountyLysychansk

While Wuyi County and Lysychansk both fluctuated in its street-construction patterns, Acireale 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. Acireale and Lysychansk have been converging in their street-network character since 1975.