The "No Helmet, No Travel Policy" has been implemented for quite a while now not just in Metro Manila but all over the country. Those that are riding their motorcycles or even if you're a passenger without helmet on will be stopped by the MMDA personnel and will be given a ticket for the violation.
This is just one of the ways for motorcycle owners to be safe on the road. Not only that, those that have more than 1 passenger at the back is not allowed for it is not safe as well. With the policy being implemented, there's an increase of helmet sales. You can buy full face or open faced helmets of your choice.
Always be safe on the road whether you are driving a car, motorbike or any kind of vehicle. Don't just think of your own safety but safety of people on the road too.