Electric bikes a menace

Just been for a walk along Merewether/ BarBeach promenade. Glad to be home alive. Electric bikes the size of motorcycles whizzing silently by at the speed of noughts . No warning bells no shouts of rage that you are blocking their way. The fear I have other than my own life is that an unpredictable toddler will stray into the path of one or three of these irresponsible riders while they are trying to execute a wheelie. The council is ultimately responsible for the supervision of this shared path. There are no rangers to police the extraordinary speeds of these motorcycles. There are no signs indicating speed limits. The bikes are not registered, the riders do not wear helmets. If someone is knocked down the rider can escape without accepting responsibility. Is our only recourse to sue the Council for failure to safeguard our lives and health if we are injured. They have a duty to of care which they have ignored. I am interested in others who share my concerns.