Soyo in context: Street-network sprawl trends

Soyo in context

2.533.54<19751976–19901991–20052006–2020SNDi of street additions
2.533.54<19751976–19901991–20052006–2020SNDi of entire street network
SoyoZaire (Region)Angola (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Soyo plotted against Zaire and Angola. The SNDi of new construction in Soyo was at its lowest in 1991-2005, compared to Zaire which rose steadily and Angola which rose steadily. Most recently, Soyo's incremental SNDi rose from 2.58 to 3.47 between 1991-2005 and 2006-2020. In terms of the aggregate network, Soyo ranked 3rd out of 4 cities in Zaire and 41st out of 56 in Angola as of 2020.

New Street Additions (2006–2020)

SNDi value
3.47
Rank in Angola
41st of 56
Rank in Zaire
3rd of 4

Entire Network (Aggregate)

SNDi value
3.36
Rank in Angola
41st of 56
Rank in Zaire
3rd of 4

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

What about similarly populated cities?

246810<19751976–19901991–20052006–2020SNDi of street additions
246810<19751976–19901991–20052006–2020SNDi of entire street network
SoyoJindRangunia

While Jind and Rangunia both built increasingly disconnected streets over time, Soyo built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns in new street additions. Looking at the full network, Jind and Rangunia both became progressively more disconnected, while Soyo became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards. Soyo and Jind have been converging in their street-network character since 1975.