Dumai in context: Street-network sprawl trends

Dumai in context

3.244.85.6<19751976–19901991–20052006–2020SNDi of street additions
3.244.85.6<19751976–19901991–20052006–2020SNDi of entire street network
DumaiRiau (Region)Indonesia (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Dumai plotted against Riau and Indonesia. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Dumai's incremental SNDi rose from 4.04 to 4.97 between 1991-2005 and 2006-2020. In terms of the aggregate network, Dumai ranked 3rd out of 15 cities in Riau and 78th out of 366 in Indonesia as of 2020.

New Street Additions (2006–2020)

SNDi value
4.97
Rank in Indonesia
107th of 366
Rank in Riau
6th of 15

Entire Network (Aggregate)

SNDi value
3.6
Rank in Indonesia
78th of 366
Rank in Riau
3rd of 15

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

What about similarly populated cities?

2.83.54.24.9<19751976–19901991–20052006–2020SNDi of street additions
2.83.54.24.9<19751976–19901991–20052006–2020SNDi of entire street network
DumaiEnpingHazro

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