Treviso in context: Street-network sprawl trends

Treviso in context

33.544.5<19751976–19901991–20052006–2020SNDi of street additions
33.544.5<19751976–19901991–20052006–2020SNDi of entire street network
TrevisoVeneto (Region)Italy (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Treviso plotted against Veneto and Italy. The SNDi of new construction in Treviso peaked in 1976-1990, compared to Veneto which peaked in 1991-2005 and Italy which peaked in 1991-2005. Most recently, Treviso's incremental SNDi fell from 4.18 to 3.58 between 1991-2005 and 2006-2020. In terms of the aggregate network, Treviso ranked 5th out of 7 cities in Veneto and 74th out of 88 in Italy as of 2020.

New Street Additions (2006–2020)

SNDi value
3.58
Rank in Italy
45th of 88
Rank in Veneto
3rd of 7

Entire Network (Aggregate)

SNDi value
3.42
Rank in Italy
74th of 88
Rank in Veneto
5th of 7

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

What about similarly populated cities?

2.43.244.85.6<19751976–19901991–20052006–2020SNDi of street additions
2.43.244.85.6<19751976–19901991–20052006–2020SNDi of entire street network
TrevisoElbasanShouzhang

In new street additions, Treviso built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Elbasan built increasingly disconnected streets over time and Shouzhang fluctuated in its street-construction patterns. For the full network, Treviso and Elbasan both became progressively more disconnected, while Shouzhang fluctuated in connectivity. Notably, Treviso had a more sprawly network than Elbasan in 1975 but the two have since reversed their relative ranking.