Depends on the local laws, some places they can get fined if they don't in others the law doesn't care. As far as I'm concerned it makes sense to wear a helmet whether it's the law or not. It might not save you if you get thrown under a truck, but it can offer some valuable protection for a less dramatic accident.
If you have a helmet yes
The age to ride gas scooters in California is at least 16 years. A properly fitted and fastened bicycle helmet is mandatory.
It as implemented in 1999 that any person under the age of 16 must where a helmet hile bicycling in the state of Maine.
Legally it depends on if its a motorcycle or a bicycle and where you are, helmet laws aren't the same all over. In practical terms, the day to stop using a helmet is the day when you no longer think your head is worth protecting. Bottom line: you should always wear a helmet regardless of your age.
Anyone under the age of 18 must wear a helmet when riding a bicycle.
All Bicycle riders under 18 are required to wear a helmet
you have to wear a helmet whenever you ride a bike or you will be fined
minimum age limit is 13 but use a helmet to protect your head
Under 21 for a motorcycle and under 16 for a bicycle.
There is no universal age requirement for wearing a bicycle helmet; however, many regions have laws mandating helmet use for children, often up to the age of 16. It's generally recommended that all cyclists, regardless of age, wear helmets for safety. Parents and guardians are encouraged to ensure that children wear helmets whenever riding. Overall, promoting helmet use is essential for reducing the risk of head injuries.
minimum age limit is 13 but use a helmet to protect your head
Persons under 18, must wear a helmet