N'Djamena in context: Street-network sprawl trends
N'Djamena in context
The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with N'Djamena plotted against Ville de N'Djamena and Chad. The SNDi of new construction in N'Djamena followed a zig-zag trend with an overall increase, compared to Ville de N'Djamena which followed a zig-zag trend with an overall increase and Chad which rose steadily. Most recently, N'Djamena's incremental SNDi rose from 1.7 to 1.75 between 1991-2005 and 2006-2020. In terms of the aggregate network, N'Djamena ranked 1st out of 1 cities in Ville de N'Djamena and 13th out of 31 in Chad as of 2020.
New Street Additions (2006–2020)
- SNDi value
- 1.75
- Rank in Chad
- 10th of 31
- Rank in Ville de N'Djamena
- 1st of 1
Entire Network (Aggregate)
- SNDi value
- 1.63
- Rank in Chad
- 13th of 31
- Rank in Ville de N'Djamena
- 1st of 1
Rankings go from most connected to most disconnected — rank 1 is the most connected.
What about similarly populated cities?
- Wuhu, China
- Brussels, Belgium
- Vijayawada, India
- Pekalongan, Indonesia
- Dhulian, India
- Kishoreganj, Bangladesh
In new street additions, N'Djamena fluctuated in its street-construction patterns, while Wuhu built increasingly connected streets over time and Pekalongan built increasingly disconnected streets over time. For the full network, N'Djamena and Pekalongan both became progressively more disconnected, while Wuhu fluctuated in connectivity. N'Djamena and Pekalongan have been growing further apart in their street-network character since 1975.