Chilanga in context: Street-network sprawl trends

Chilanga in context

34567<19751976–19901991–20052006–2020SNDi of street additions
34567<19751976–19901991–20052006–2020SNDi of entire street network
ChilangaLusaka (Region)Zambia (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Chilanga plotted against Lusaka and Zambia. While Lusaka and Zambia both rose steadily, Chilanga's new street additions rose steadily. Most recently, Chilanga's incremental SNDi rose from 5.73 to 6.83 between 1991-2005 and 2006-2020. In terms of the aggregate network, Chilanga ranked 3rd out of 3 cities in Lusaka and 30th out of 30 in Zambia as of 2020.

New Street Additions (2006–2020)

SNDi value
6.83
Rank in Zambia
30th of 30
Rank in Lusaka
3rd of 3

Entire Network (Aggregate)

SNDi value
4.95
Rank in Zambia
30th of 30
Rank in Lusaka
3rd of 3

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

What about similarly populated cities?

2468<19751976–19901991–20052006–2020SNDi of street additions
2468<19751976–19901991–20052006–2020SNDi of entire street network
ChilangaDakingariJupiter

While Dakingari and Jupiter both built increasingly disconnected streets from 1975 through 1976-1990, then improved, Chilanga built increasingly disconnected streets over time in new street additions. For the full network, Chilanga became progressively more disconnected, while Dakingari grew more disconnected from 1975 through 1976-1990, then improved and Jupiter grew more disconnected from 1975 through 1991-2005, then improved. Chilanga and Jupiter have been converging in their street-network character since 1975.