This page shows the route relations of national roads in the Philippines. Relations are named by route number ("Route X/XX/XXX") or road name ("Route X/XX/XXX"), except for relations of tertiary national roads, which only road names, yet, no tertiary road relation has been mapped yet.
The national road route relation tagging scheme is based on Ian Lopez's tagging, but included tertiary national roads, and naming can be either the road number (i.e. "Route X/XX/XXX"), road name (per the Department of Public Works and Highways, or both.
||Name of road/road number, or both
||Name of the national road. Aside from the DPWH Road Atlas pages, that documents details of all national roads, the name of the national road can be found on project detail signboards posted near areas where roadworks are done, and road numbers can be found in newly erected route number signs, which resemble National Route signs in Australia.
||expressway, primary, secondary, or tertiary
||Defines the class of the national road:
- Primary national road
- Secondary national road
- Tertiary national road
||The road reference number. These can be found in newly erected route number signs and occasionally in road construction project detail signboards near roadwork sites, aside from the DPWH Road Atlas pages.
||Common, signed, or older names
||South Luzon Expressway (SLEX), Metro Manila Skyway (Skyway), Alabang - Calamba - Santo Tomas Expressway (ACTEX), Southern Tagalog Arterial Road (STAR Tollway)
||Portions of E2, the South Luzon Expressway between Sales Interchange and Calamba Exit and the Metro Manila Skyway from Magallanes Exit and Alabang Exit near Hillsborough Subdivision, is concurrent with AH26 (Pan-Philippine Highway/Asian Highway 26)
||Zapote - Alabang Road
||Alabang-Zapote Road, Real Street (Calle Real), North Bridgeway
||North Bridgeway is not an original part of Alabang-Zapote Road, or Route 411. The original part is a curved alignment between Filinvest Avenue and North Bridgeway, that is removed after the completion of Skyway Stage 2 in 2012, whose entrance/exit ramp required the realignment of Alabang-Zapote Road to use the ramp service roads which intersect North Bridgeway instead.