The kids in my neighborhood are zipping around on these things at 30 MPH. In my state it's illegal for these kids to be riding around on these things, but the law isn't being enforced. Probably more of a hassle for the officer than it's worth.
And safety? Bwahahahaha! Kids are riding these at 30 MPH in shorts, t-shirt and maybe a bicycle helmet. Just the other day I saw three girls who appeared to be middle school-aged hop on an e-delivery type bike and ride 3 up! All they were wearing were those super short and super thin shorts girls like to wear, and a t-shirt. Not a single helmet. Yet there they were riding 3 up on this e-bike on public streets just after the peak of evening rush hour.
It's insane! I'm continually amazed we're not seeing more news stories of kids getting hurt on these things. Don't get me wrong, I'm glad we're not seeing these news stories, but I'm amazed we aren't.