This applies to children 16 and under who are riding them, even if they are a passenger, or riding in an attached restraining seat or trailer.
RELATED: Haverford Twp. passes new helmet ordinance for kids on e-bikes, e-scooters
The warning period runs until the end of the year.
Then, come New Year's Day, police will impose a $25 fine for violations.
The death of 12-year-old Abigail Gillon, after a e-scooter crash in Aston, is fueling a movement to pass a state bill for safety changes.