"You are going to have injuries with anything - anything that's new and foreign.''
The scooters were classified as a low-powered vehicle that did not require a licence and could be ridden on footpaths, or on the road when the footpath was unavailable or congested, he said.
The scooters can be ridden on the footpath, road, shared pathways and cycle lanes separated by concrete islands but not the cycle lanes painted onto the road.
Riders were also required to use the scooters in a careful and considerate manner and at a speed that did not put others at risk, he said.
Those who failed to do so could be issued with infringement notices for improper use, or even face charges in court, he said.
Police were already planning to talk to them about the new devices, he said.
