Laoag in context: Street-network sprawl trends

Laoag in context

234567<19751976–19901991–20052006–2020SNDi of street additions
234567<19751976–19901991–20052006–2020SNDi of entire street network
LaoagIlocos Norte (Region)Philippines (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Laoag plotted against Ilocos Norte and Philippines. The SNDi of new construction in Laoag followed a zig-zag trend with an overall increase, compared to Ilocos Norte which followed a zig-zag trend with an overall increase and Philippines which rose steadily. Most recently, Laoag's incremental SNDi rose from 4.05 to 4.8 between 1991-2005 and 2006-2020. In terms of the aggregate network, Laoag ranked 1st out of 1 cities in Ilocos Norte and 1st out of 114 in Philippines as of 2020.

New Street Additions (2006–2020)

SNDi value
4.8
Rank in Philippines
20th of 114
Rank in Ilocos Norte
1st of 1

Entire Network (Aggregate)

SNDi value
3.12
Rank in Philippines
1st of 114
Rank in Ilocos Norte
1st of 1

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

What about similarly populated cities?

2.43.244.8<19751976–19901991–20052006–2020SNDi of street additions
2.43.244.8<19751976–19901991–20052006–2020SNDi of entire street network
LaoagShouxianTeziutlan

In new street additions, Laoag fluctuated in its street-construction patterns, while Shouxian built increasingly disconnected streets from 1975 through 1991-2005, then improved and Teziutlán built increasingly disconnected streets over time. For the full network, Laoag and Teziutlán both became progressively more disconnected, while Shouxian grew more disconnected from 1975 through 1991-2005, then improved. Laoag and Shouxian have been converging in their street-network character since 1975.