Tanjung Pinang 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 Tanjung Pinang plotted against Kepulauan Riau and Indonesia. The SNDi of new construction in Tanjung Pinang peaked in 1976-1990, compared to Kepulauan Riau which followed a zig-zag trend with an overall increase and Indonesia which rose steadily. Most recently, Tanjung Pinang's incremental SNDi fell from 5.05 to 4.15 between 1991-2005 and 2006-2020. In terms of the aggregate network, Tanjung Pinang ranked 6th out of 6 cities in Kepulauan Riau and 276th 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?

• Nanlingchengcun, China
• Aqaba, Jordan
• Port-Gentil, Gabon
• Kanhangad, India
• Mongu, Zambia
• Corumbá, Brazil

In new street additions, Tanjung Pinang built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Nanlingchengcun fluctuated in its street-construction patterns and Kanhangad built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns. For the full network, Tanjung Pinang grew more disconnected from 1975 through 1991-2005, then improved, while Nanlingchengcun became progressively more disconnected and Kanhangad became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards. Tanjung Pinang and Nanlingchengcun have been converging in their street-network character since 1975.