Petrolina in context: Street-network sprawl trends

Petrolina in context

1.82.43<19751976–19901991–20052006–2020SNDi of street additions
1.82.43<19751976–19901991–20052006–2020SNDi of entire street network
PetrolinaPernambuco (Region)Brazil (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Petrolina plotted against Pernambuco and Brazil. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Petrolina's incremental SNDi rose from 1.92 to 2.25 between 1991-2005 and 2006-2020. In terms of the aggregate network, Petrolina ranked 6th out of 15 cities in Pernambuco and 98th out of 365 in Brazil as of 2020.

New Street Additions (2006–2020)

SNDi value
2.25
Rank in Brazil
82nd of 365
Rank in Pernambuco
7th of 15

Entire Network (Aggregate)

SNDi value
1.88
Rank in Brazil
98th of 365
Rank in Pernambuco
6th of 15

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
PetrolinaGusauCumana

In new street additions, Petrolina and Cumana both fluctuated in its street-construction patterns, while Gusau built increasingly disconnected streets from 1975 through 1991-2005, then improved. For the full street network, though, all three cities follow the same trend.