Bebedjia in context: Street-network sprawl trends

Bebedjia in context

1.21.82.43<19751976–19901991–20052006–2020SNDi of street additions
1.21.82.43<19751976–19901991–20052006–2020SNDi of entire street network
BebedjiaLogone Oriental (Region)Chad (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Bebedjia plotted against Logone Oriental and Chad. The SNDi of new construction in Bebedjia peaked in 1991-2005, compared to Logone Oriental which peaked in 1976-1990 and Chad which rose steadily. Most recently, Bebedjia's incremental SNDi fell from 1.6 to 1.49 between 1991-2005 and 2006-2020. In terms of the aggregate network, Bebedjia ranked 1st out of 3 cities in Logone Oriental and 11th out of 31 in Chad as of 2020.

New Street Additions (2006–2020)

SNDi value
1.49
Rank in Chad
7th of 31
Rank in Logone Oriental
2nd of 3

Entire Network (Aggregate)

SNDi value
1.51
Rank in Chad
11th of 31
Rank in Logone Oriental
1st of 3

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
BebedjiaLesznoHaozhuang

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