Carpi in context: Street-network sprawl trends

Carpi in context

1.62.43.24<19751976–19901991–20052006–2020SNDi of street additions
1.62.43.24<19751976–19901991–20052006–2020SNDi of entire street network
CarpiEmilia-Romagna (Region)Italy (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Carpi plotted against Emilia-Romagna and Italy. The SNDi of new construction in Carpi rose steadily, compared to Emilia-Romagna which peaked in 1991-2005 and Italy which peaked in 1991-2005. Most recently, Carpi's incremental SNDi rose from 2.69 to 3.27 between 1991-2005 and 2006-2020. In terms of the aggregate network, Carpi ranked 1st out of 10 cities in Emilia-Romagna and 9th out of 88 in Italy as of 2020.

New Street Additions (2006–2020)

SNDi value
3.27
Rank in Italy
39th of 88
Rank in Emilia-Romagna
6th of 10

Entire Network (Aggregate)

SNDi value
1.96
Rank in Italy
9th of 88
Rank in Emilia-Romagna
1st of 10

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

What about similarly populated cities?

1.42.12.83.5<19751976–19901991–20052006–2020SNDi of street additions
1.42.12.83.5<19751976–19901991–20052006–2020SNDi of entire street network
CarpiRas El OuedGaoling

In new street additions, Carpi and Ras El Oued both built increasingly disconnected streets over time, while Gaoling built increasingly disconnected streets from 1975 through 1991-2005, then improved. For the full street network, though, all three cities follow the same trend. Notably, Carpi had a more sprawly network than Gaoling in 1975 but the two have since reversed their relative ranking.