Ganda in context: Street-network sprawl trends

Ganda 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
GandaBenguela (Region)Angola (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Ganda plotted against Benguela and Angola. The SNDi of new construction in Ganda peaked in 1991-2005, compared to Benguela which peaked in 1991-2005 and Angola which rose steadily. Most recently, Ganda's incremental SNDi fell from 3.05 to 3.01 between 1991-2005 and 2006-2020. In terms of the aggregate network, Ganda ranked 3rd out of 4 cities in Benguela and 35th out of 56 in Angola as of 2020.

New Street Additions (2006–2020)

SNDi value
3.01
Rank in Angola
34th of 56
Rank in Benguela
3rd of 4

Entire Network (Aggregate)

SNDi value
2.69
Rank in Angola
35th of 56
Rank in Benguela
3rd of 4

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

What about similarly populated cities?

23456<19751976–19901991–20052006–2020SNDi of street additions
23456<19751976–19901991–20052006–2020SNDi of entire street network
GandaYichengReggio Calabria

In new street additions, Ganda and Yicheng both built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Reggio Calabria built increasingly disconnected streets from 1975 through 1976-1990, then improved. For the full network, Ganda and Reggio Calabria both became progressively more disconnected, while Yicheng grew more disconnected from 1975 through 1991-2005, then improved. Notably, Ganda had a more connected network than Yicheng in 1975 but the two have since reversed their relative ranking.