Classification of Roads in the Philippines

National aid roads are provincial and city roads considered important enough to eventually become part of the national highway system.
Their designation is made by the Secretary of Public Works and Communications, based on recommendations from the Provincial and City Board and the Commissioner of Public Highways.

Include roads connecting municipalities, roads from municipalities or provincial/national roads to public wharves or railway stations, and others designated by the Secretary of Public Works and Communications.
Right-of-way: minimum 15 meters, extendable to 20 meters; 60 meters reserved for roads on unpatented public land.

Comprise all roads not classified as national, provincial, or city roads.
Minimum right-of-way is 10 meters.
Town site principal streets on public lands shall have a 60-meter width; other streets a minimum of 15 meters.

National primary, secondary, and national aid provincial and city roads:
- Managed by Highway District Engineers and Highway City Engineers under the Commissioner of Public Highways.
- Funded through Republic of the Philippines appropriations.
- The Secretary of Public Works and Communications allocates funds collected under specific laws.
Provincial roads:
- Managed by Highway District Engineers under the Commissioner of Public Highways.
- Funded with provincial resources and federal aid as authorized.
City and municipal roads:
- Managed by respective local governments.
- Funded with local funds and authorized aid.

Roads of significant importance may be reclassified upon request and recommendation.
The Secretary of Public Works and Communications directs the preparation of official maps of the national road system, subject to Presidential approval.