Collado Villalba in context: Street-network sprawl trends

Collado Villalba in context

22.42.83.2<19751976–19901991–20052006–2020SNDi of street additions
22.42.83.2<19751976–19901991–20052006–2020SNDi of entire street network
Collado VillalbaComunidad de Madrid (Region)Spain (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Collado Villalba plotted against Comunidad de Madrid and Spain. The SNDi of new construction in Collado Villalba peaked in 1991-2005, compared to Comunidad de Madrid which peaked in 1976-1990 and Spain which peaked in 1976-1990. Most recently, Collado Villalba's incremental SNDi fell from 2.95 to 2.8 between 1991-2005 and 2006-2020. In terms of the aggregate network, Collado Villalba ranked 7th out of 7 cities in Comunidad de Madrid and 72nd out of 85 in Spain as of 2020.

New Street Additions (2006–2020)

SNDi value
2.8
Rank in Spain
60th of 85
Rank in Comunidad de Madrid
7th of 7

Entire Network (Aggregate)

SNDi value
2.74
Rank in Spain
72nd of 85
Rank in Comunidad de Madrid
7th of 7

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

What about similarly populated cities?

246<19751976–19901991–20052006–2020SNDi of street additions
246<19751976–19901991–20052006–2020SNDi of entire street network
Collado VillalbaLaharManakara

In new street additions, Collado Villalba and Manakara both built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Lahar built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns. For the full street network, though, all three cities follow the same trend. Collado Villalba and Lahar have been growing further apart in their street-network character since 1975.