Laï in context: Street-network sprawl trends

Lai in context

0.91.82.73.6<19751976–19901991–20052006–2020SNDi of street additions
0.91.82.73.6<19751976–19901991–20052006–2020SNDi of entire street network
LaiTandjile (Region)Chad (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Laï plotted against Tandjilé and Chad. The SNDi of new construction in Laï peaked in 1991-2005, compared to Tandjilé which peaked in 1991-2005 and Chad which rose steadily. Most recently, Laï's incremental SNDi fell from 3.92 to 1.12 between 1991-2005 and 2006-2020. In terms of the aggregate network, Laï ranked 2nd out of 2 cities in Tandjilé and 12th out of 31 in Chad as of 2020.

New Street Additions (2006–2020)

SNDi value
1.12
Rank in Chad
3rd of 31
Rank in Tandjilé
1st of 2

Entire Network (Aggregate)

SNDi value
1.59
Rank in Chad
12th of 31
Rank in Tandjilé
2nd of 2

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

What about similarly populated cities?

246<19751976–19901991–20052006–2020SNDi of street additions
246<19751976–19901991–20052006–2020SNDi of entire street network
LaiKailarasTavsanli

In new street additions, Laï built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Kailaras fluctuated in its street-construction patterns and Tavşanlı fluctuated in its street-construction patterns. For the full network, Laï and Kailaras both fluctuated in connectivity, while Tavşanlı became progressively more disconnected. Laï and Tavşanlı have been converging in their street-network character since 1975.