Tivoli in context: Street-network sprawl trends

Tivoli in context

2.73.64.55.46.3<19751976–19901991–20052006–2020SNDi of street additions
2.73.64.55.46.3<19751976–19901991–20052006–2020SNDi of entire street network
TivoliLazio (Region)Italy (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Tivoli plotted against Lazio and Italy. The SNDi of new construction in Tivoli peaked in 1976-1990, compared to Lazio which rose steadily and Italy which peaked in 1991-2005. Most recently, Tivoli's incremental SNDi fell from 5.47 to 3.73 between 1991-2005 and 2006-2020. In terms of the aggregate network, Tivoli ranked 6th out of 7 cities in Lazio and 85th out of 88 in Italy as of 2020.

New Street Additions (2006–2020)

SNDi value
3.73
Rank in Italy
52nd of 88
Rank in Lazio
2nd of 7

Entire Network (Aggregate)

SNDi value
4.06
Rank in Italy
85th of 88
Rank in Lazio
6th of 7

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

What about similarly populated cities?

0246<19751976–19901991–20052006–2020SNDi of street additions
0246<19751976–19901991–20052006–2020SNDi of entire street network
TivoliPing'anFoumbot

In new street additions, Tivoli and Foumbot both built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Ping'an built increasingly disconnected streets over time. For the full street network, though, all three cities follow the same trend.