a rider wearing a helmet does not protect the other person/property when he crashes into someone or something... so who cares about HELMETS anyway? Best to focus on what is important, like NOT injuring pedestrians or making their phones (and other things) fly through the air and break into pieces when hitting the concrete.
In my part of the world anything on wheels (bikes, skates, scooters, etc.) on a walkway or boardwalk or anything similar can not exceed a certain speed (8 to 10 mph as I recall) but they are not disallowed. As long as people use them responsibly there should be no problem. Bicycles can exceed 30mph and weigh more. So same rules should apply to scooters. But I still like the warning noise idea. It's been floated around for a while now with electric cars.
Back when I was a kid, large luxury cars ran so quiet I could not tell there was a car behind me sometimes and so I did not get out of the way and the inevitable horn honk nearly made me wreck my bike a couple of times. Don't wanna do THAT noise to pedestrians on the sidewalk, THAT's for sure!
Biting the hand that feeds IT
