Dagupan [Lingayen] 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 Dagupan [Lingayen] plotted against Pangasinan and Philippines. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Dagupan [Lingayen]'s incremental SNDi rose from 6.84 to 7.28 between 1991-2005 and 2006-2020. In terms of the aggregate network, Dagupan [Lingayen] ranked 5th out of 5 cities in Pangasinan and 104th out of 114 in Philippines as of 2020.

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

What about similarly populated cities?

• Luohe, China
• Changshu, China
• Guntur, India
• Yangzhou, China
• Aguascalientes, México
• Bucaramanga, Colombia

While Luohe and Yangzhou both built increasingly disconnected streets from 1975 through 1991-2005, then improved, Dagupan [Lingayen] built increasingly disconnected streets over time in new street additions. For the full street network, though, all three cities follow the same trend. Dagupan [Lingayen] and Luohe have been growing further apart in their street-network character since 1975.