Over 350 motorcycle riders were caught violating the no-helmet policy in the past two days, the Philippine National Police (PNP) said.
Among those caught violating the no-helmet policy are four police officers and a soldier.
As much as 69 of the riders caught not wearing a helmet while on the road were on board motorcycles that do not have license plates.
Solons signed the Mandatory Helmet Act of 2010 into law in March 2010, which requires motorcycle riders and their passengers to wear a standard protective headgear "whether on long or short drives, at any time of the day, in any type of road and highway."
The law was authored by Sen. Ramon Revilla Jr. in a bid to reduce fatal accidents involving motorcycle riders.