Lucerne in context: Street-network sprawl trends

Lucerne in context

2.433.64.2<19751976–19901991–20052006–2020SNDi of street additions
2.433.64.2<19751976–19901991–20052006–2020SNDi of entire street network
LucerneSwitzerland (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Lucerne plotted against Switzerland. The SNDi of new construction in Lucerne followed a zig-zag trend with an overall increase, while Switzerland rose steadily. Most recently, Lucerne's incremental SNDi rose from 3.37 to 4.34 between 1991-2005 and 2006-2020. In terms of the aggregate network, Lucerne ranked 13th out of 17 in Switzerland as of 2020.

New Street Additions (2006–2020)

SNDi value
4.34
Rank in Switzerland
15th of 17

Entire Network (Aggregate)

SNDi value
2.73
Rank in Switzerland
13th of 17

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

What about similarly populated cities?

3456<19751976–19901991–20052006–2020SNDi of street additions
3456<19751976–19901991–20052006–2020SNDi of entire street network
LucerneTarkeshwarShangluo

In new street additions, Lucerne and Shangluo both fluctuated in its street-construction patterns, while Tarkeshwar built increasingly disconnected streets from 1975 through 1991-2005, then improved. For the full network, Lucerne and Tarkeshwar both became progressively more disconnected, while Shangluo grew more disconnected from 1975 through 1976-1990, then improved. Notably, Lucerne had a more sprawly network than Shangluo in 1975 but the two have since reversed their relative ranking.