Sanggau in context: Street-network sprawl trends

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Sanggau plotted against Kalimantan Barat and Indonesia. The SNDi of new construction in Sanggau followed a zig-zag trend with an overall increase, compared to Kalimantan Barat which rose steadily and Indonesia which rose steadily. Most recently, Sanggau's incremental SNDi rose from 5.3 to 6.39 between 1991-2005 and 2006-2020. In terms of the aggregate network, Sanggau ranked 6th out of 9 cities in Kalimantan Barat and 295th out of 366 in Indonesia as of 2020.

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

What about similarly populated cities?

• Diphu, India
• Selden, United States
• Kruševac, Serbia
• Palmerston North, New Zealand
• Bina Etawa, India
• Nawnghkio, Myanmar

In new street additions, Sanggau fluctuated in its street-construction patterns, while Diphu built increasingly disconnected streets over time and Palmerston North built increasingly disconnected streets from 1975 through 1991-2005, then improved. For the full street network, though, all three cities follow the same trend. Sanggau and Diphu have been growing further apart in their street-network character since 1975.