Tunduma in context: Street-network sprawl trends

Tunduma in context

1.62.43.24<19751976–19901991–20052006–2020SNDi of street additions
1.62.43.24<19751976–19901991–20052006–2020SNDi of entire street network
TundumaSongwe (Region)Tanzania (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Tunduma plotted against Songwe and Tanzania. The SNDi of new construction in Tunduma rose steadily, compared to Songwe which peaked in 1991-2005 and Tanzania which was at its lowest in 1976-1990. Most recently, Tunduma's incremental SNDi rose from 1.92 to 2.41 between 1991-2005 and 2006-2020. In terms of the aggregate network, Tunduma ranked 1st out of 2 cities in Songwe and 3rd out of 45 in Tanzania as of 2020.

New Street Additions (2006–2020)

SNDi value
2.41
Rank in Tanzania
18th of 45
Rank in Songwe
1st of 2

Entire Network (Aggregate)

SNDi value
1.73
Rank in Tanzania
3rd of 45
Rank in Songwe
1st of 2

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

What about similarly populated cities?

1.82.73.64.5<19751976–19901991–20052006–2020SNDi of street additions
1.82.73.64.5<19751976–19901991–20052006–2020SNDi of entire street network
TundumaIpialesTychy

In new street additions, Tunduma and Tychy both built increasingly disconnected streets over time, while Ipiales built increasingly disconnected streets from 1975 through 1976-1990, then improved. For the full network, Tunduma and Tychy both became progressively more disconnected, while Ipiales grew more disconnected from 1975 through 1976-1990, then improved.