Minimum speedPhilippines
1. Minimum speed
A minimum speed is the lowest speed that vehicles are required to maintain on a particular road or under specified conditions. Minimum-speed rules are intended to prevent vehicles travelling unnecessarily slowly from disrupting traffic or creating large speed differences between road users.
A minimum speed does not require drivers to maintain that speed when traffic, weather, visibility, road conditions or safety require them to slow down. The way minimum speeds are indicated and enforced varies between countries.
Where should I check minimum-speed requirements in the Philippines?
Check the expressway speed-limit table and the applicable roadside signs. The TRB distinguishes minimum and maximum limits by facility and vehicle category; do not treat an expressway minimum as a rule for every Philippine road.
Start of a minimum speed.
English • Traffic sign R4-3 • Minimum speed: 40 km/h. This sign indicates a minimum speed of 40 km/h on the section of expressway it covers. Continue to adapt your driving to traffic and safety conditions.
Filipino • R4-3 • Pinakamababang bilis: 40 km/h. Ipinapakita ng karatulang ito ang 40 km/h na pinakamababang bilis sa bahaging sakop nito sa expressway. Iangkop pa rin ang pagmamaneho sa trapiko at kaligtasan.
Sources
🔗 Commons.wikimedia.org
🔗 Fliphtml5.com • LTO • Road Traffic Signs & Pavement Markings • p. 9 (pampublikong kopya)
🔗 Lto.gov.ph • LTO • opisyal na materyal
🔗 Scribd.com • DPWH • R4-3 (pampublikong kopya)
SVG source: Government of the Philippines derivative work: Fry1989 eh? • Public domain • Original revision 2018-10-14. Wikimedia original unmodified.

Traffic rules
Philippines