Tanout in context: Street-network sprawl trends

Tanout in context

1.622.42.83.2<19751976–19901991–20052006–2020SNDi of street additions
1.622.42.83.2<19751976–19901991–20052006–2020SNDi of entire street network
TanoutZinder (Region)Niger (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Tanout plotted against Zinder and Niger. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Tanout's incremental SNDi rose from 2.62 to 3.04 between 1991-2005 and 2006-2020. In terms of the aggregate network, Tanout ranked 5th out of 5 cities in Zinder and 26th out of 33 in Niger as of 2020.

New Street Additions (2006–2020)

SNDi value
3.04
Rank in Niger
22nd of 33
Rank in Zinder
3rd of 5

Entire Network (Aggregate)

SNDi value
2.1
Rank in Niger
26th of 33
Rank in Zinder
5th of 5

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

What about similarly populated cities?

1.62.43.24<19751976–19901991–20052006–2020SNDi of street additions
1.62.43.24<19751976–19901991–20052006–2020SNDi of entire street network
TanoutAnfu CountyShrnak

In new street additions, Tanout and Anfu County both built increasingly disconnected streets over time, while Shrnak built increasingly disconnected streets from 1975 through 1976-1990, then improved. For the full network, Tanout and Anfu County both became progressively more disconnected, while Shrnak grew more disconnected from 1975 through 1991-2005, then improved.