Tierkloof in context: Street-network sprawl trends

Tierkloof in context

2.12.83.54.2<19751976–19901991–20052006–2020SNDi of street additions
2.12.83.54.2<19751976–19901991–20052006–2020SNDi of entire street network
TierkloofWestern Cape (Region)South Africa (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Tierkloof plotted against Western Cape and South Africa. The SNDi of new construction in Tierkloof peaked in 1991-2005, compared to Western Cape which rose steadily and South Africa which rose steadily. Most recently, Tierkloof's incremental SNDi fell from 4.32 to 3.57 between 1991-2005 and 2006-2020. In terms of the aggregate network, Tierkloof ranked 6th out of 14 cities in Western Cape and 36th out of 81 in South Africa as of 2020.

New Street Additions (2006–2020)

SNDi value
3.57
Rank in South Africa
37th of 81
Rank in Western Cape
3rd of 14

Entire Network (Aggregate)

SNDi value
3.08
Rank in South Africa
36th of 81
Rank in Western Cape
6th of 14

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
TierkloofFicheTunduru

In new street additions, Tierkloof built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Fiche built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns and Tunduru fluctuated in its street-construction patterns. For the full network, Tierkloof and Tunduru both became progressively more disconnected, while Fiche became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards. Tierkloof and Fiche have been growing further apart in their street-network character since 1975.