We've lived here a year now, and the plethora of scooters and bikes has exploded. I now see piles of scooters like ten to a bunch sitting around. Often they are in the sidewalk and a hazard to navigation (or perambulation). The various bikes are all over as well, Uber has joined the fray.
We've almost been hit a few times by folks on scooters coming up from behind, you can't hear them. The city is talking about the problem and hazard and now there is an ap for reporting improperly stowed scooters that I have not used. On the one hand, it's a neat form of transportation, but on the other they are hazardous.