Tchamba in context: Street-network sprawl trends

Tchamba in context

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

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Tchamba plotted against Centre and Togo. The SNDi of new construction in Tchamba peaked in 1991-2005, compared to Centre which rose steadily and Togo which followed a zig-zag trend with an overall increase. Most recently, Tchamba's incremental SNDi fell from 2.75 to 2.59 between 1991-2005 and 2006-2020. In terms of the aggregate network, Tchamba ranked 1st out of 3 cities in Centre and 11th out of 17 in Togo as of 2020.

New Street Additions (2006–2020)

SNDi value
2.59
Rank in Togo
6th of 17
Rank in Centre
1st of 3

Entire Network (Aggregate)

SNDi value
2.53
Rank in Togo
11th of 17
Rank in Centre
1st of 3

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

What about similarly populated cities?

36912<19751976–19901991–20052006–2020SNDi of street additions
36912<19751976–19901991–20052006–2020SNDi of entire street network
TchambaMililaniNkwanta

In new street additions, Tchamba built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Mililani built increasingly disconnected streets from 1975 through 1976-1990, then improved and Nkwanta built increasingly disconnected streets over time. For the full street network, though, all three cities follow the same trend. Tchamba and Nkwanta have been growing further apart in their street-network character since 1975.