Lugano in context: Street-network sprawl trends

Lugano in context

2.83.54.24.9<19751976–19901991–20052006–2020SNDi of street additions
2.83.54.24.9<19751976–19901991–20052006–2020SNDi of entire street network
LuganoTicino (Region)Switzerland (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Lugano plotted against Ticino and Switzerland. The SNDi of new construction in Lugano peaked in 1991-2005, compared to Ticino which rose steadily and Switzerland which rose steadily. Most recently, Lugano's incremental SNDi fell from 4.79 to 4.69 between 1991-2005 and 2006-2020. In terms of the aggregate network, Lugano ranked 1st out of 1 cities in Ticino and 17th out of 17 in Switzerland as of 2020.

New Street Additions (2006–2020)

SNDi value
4.69
Rank in Switzerland
16th of 17
Rank in Ticino
1st of 1

Entire Network (Aggregate)

SNDi value
3.7
Rank in Switzerland
17th of 17
Rank in Ticino
1st of 1

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

What about similarly populated cities?

12345<19751976–19901991–20052006–2020SNDi of street additions
12345<19751976–19901991–20052006–2020SNDi of entire street network
LuganoBisauliOmo

In new street additions, Lugano built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Bisauli fluctuated in its street-construction patterns and Omo fluctuated in its street-construction patterns. For the full network, Lugano and Omo both became progressively more disconnected, while Bisauli fluctuated in connectivity. Lugano and Omo have been growing further apart in their street-network character since 1975.