Tchadoua in context: Street-network sprawl trends
Tchadoua in context
The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Tchadoua plotted against Maradi and Niger. The SNDi of new construction in Tchadoua followed a zig-zag trend with an overall increase, compared to Maradi which followed a zig-zag trend with an overall increase and Niger which rose steadily. Most recently, Tchadoua's incremental SNDi rose from 0.88 to 2.89 between 1991-2005 and 2006-2020. In terms of the aggregate network, Tchadoua ranked 3rd out of 7 cities in Maradi and 10th out of 33 in Niger as of 2020.
New Street Additions (2006–2020)
- SNDi value
- 2.89
- Rank in Niger
- 19th of 33
- Rank in Maradi
- 5th of 7
Entire Network (Aggregate)
- SNDi value
- 1.46
- Rank in Niger
- 10th of 33
- Rank in Maradi
- 3rd of 7
Rankings go from most connected to most disconnected — rank 1 is the most connected.
What about similarly populated cities?
- Kalasin, Thailand
- Sololá - Tz'olöj Ya', Guatemala
- Kara-Balta, Kyrgyzstan
- Suxi, China
- Jdaydet Artooz, Syria
- Bafatá, Guinea-Bissau
In new street additions, Tchadoua fluctuated in its street-construction patterns, while Kalasin built increasingly disconnected streets over time and Suxi built increasingly disconnected streets from 1975 through 1991-2005, then improved. For the full network, Tchadoua fluctuated in connectivity, while Kalasin became progressively more disconnected and Suxi grew more disconnected from 1975 through 1991-2005, then improved.