What is the speed limit on Philippine roads and expressways?

Under RA 4136, the limit for private cars is generally 80 km/h on open country roads, 40 km/h on through streets, and 30 km/h on city streets, and lower in crowded areas and school zones. Expressways usually have a maximum of 100 km/h and a minimum of 60 km/h for cars. Always follow the posted speed signs, since limits can vary per road.