Téra in context: Street-network sprawl trends

Tera in context

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
TeraTillabery (Region)Niger (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Téra plotted against Tillabéry and Niger. The SNDi of new construction in Téra was at its lowest in 1976-1990, compared to Tillabéry which peaked in 1976-1990 and Niger which rose steadily. Most recently, Téra's incremental SNDi rose from 2.1 to 2.49 between 1991-2005 and 2006-2020. In terms of the aggregate network, Téra ranked 2nd out of 4 cities in Tillabéry and 22nd out of 33 in Niger as of 2020.

New Street Additions (2006–2020)

SNDi value
2.49
Rank in Niger
18th of 33
Rank in Tillabéry
2nd of 4

Entire Network (Aggregate)

SNDi value
1.94
Rank in Niger
22nd of 33
Rank in Tillabéry
2nd of 4

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
TeraBabahoyoLingao County

In new street additions, Téra built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns, while Babahoyo fluctuated in its street-construction patterns and Lingao County built increasingly disconnected streets from 1975 through 1991-2005, then improved. For the full network, Téra became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards, while Babahoyo fluctuated in connectivity and Lingao County became progressively more disconnected. Téra and Babahoyo have been growing further apart in their street-network character since 1975.