I think it users should be trained with traffic rules, I've seen so many dangerous users. Not only they bring harm to pedestrian, the being harm to drivers too. I'm amazed how scooter can bring pure convenience to citizens in other countries (last one was paris i visited) but doesn't work in Singapore at all. Its riders problem and also, there's not specific route for the scooters. Pavement, danger to pedestrian. Road, danger to rider himself and drivers. Set speed limit? Still someone died recently after being knocked down.