Tanay in context: Street-network sprawl trends

Tanay in context

4.95.66.37<19751976–19901991–20052006–2020SNDi of street additions
4.95.66.37<19751976–19901991–20052006–2020SNDi of entire street network
TanayRizal (Region)Philippines (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Tanay plotted against Rizal and Philippines. While Rizal and Philippines both rose steadily, Tanay's new street additions rose steadily. Most recently, Tanay's incremental SNDi rose from 6.39 to 7.28 between 1991-2005 and 2006-2020. In terms of the aggregate network, Tanay ranked 2nd out of 3 cities in Rizal and 101st out of 114 in Philippines as of 2020.

New Street Additions (2006–2020)

SNDi value
7.28
Rank in Philippines
100th of 114
Rank in Rizal
2nd of 3

Entire Network (Aggregate)

SNDi value
5.91
Rank in Philippines
101st of 114
Rank in Rizal
2nd of 3

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

What about similarly populated cities?

468<19751976–19901991–20052006–2020SNDi of street additions
468<19751976–19901991–20052006–2020SNDi of entire street network
TanayTikoSalon

While Tiko and Salon both fluctuated in its street-construction patterns, Tanay built increasingly disconnected streets over time in new street additions. For the full network, Tanay and Tiko both became progressively more disconnected, while Salon grew more disconnected from 1975 through 1976-1990, then improved. Notably, Tanay had a more sprawly network than Salon in 1975 but the two have since reversed their relative ranking.