Subic in context: Street-network sprawl trends

Subic in context

4.85.66.47.2<19751976–19901991–20052006–2020SNDi of street additions
4.85.66.47.2<19751976–19901991–20052006–2020SNDi of entire street network
SubicZambales (Region)Philippines (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Subic plotted against Zambales and Philippines. The SNDi of new construction in Subic followed a zig-zag trend with an overall increase, compared to Zambales which peaked in 1991-2005 and Philippines which rose steadily. Most recently, Subic's incremental SNDi rose from 4.75 to 5.64 between 1991-2005 and 2006-2020. In terms of the aggregate network, Subic ranked 2nd out of 2 cities in Zambales and 96th out of 114 in Philippines as of 2020.

New Street Additions (2006–2020)

SNDi value
5.64
Rank in Philippines
55th of 114
Rank in Zambales
1st of 2

Entire Network (Aggregate)

SNDi value
5.61
Rank in Philippines
96th of 114
Rank in Zambales
2nd of 2

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
SubicJuyeChihu

In new street additions, Subic fluctuated in its street-construction patterns, while Juye built increasingly disconnected streets from 1975 through 1976-1990, then improved and Chihu built increasingly disconnected streets over time. For the full network, Subic fluctuated in connectivity, while Juye grew more disconnected from 1975 through 1991-2005, then improved and Chihu became progressively more disconnected.