It is very clear from statistics of traffic accidents between cars and pedestrians that risk of lethal injuries rises sharply with speed, even at speeds of 30 km/h. It does not make a difference whether a car crashes with 30 km\h into you, or you crash with 30 km/h into a car.
It is also very clear that riding light motorcycles is far more risky than riding a bike.
It is very clear from statistics of traffic accidents between cars and pedestrians that risk of lethal injuries rises sharply with speed, even at speeds of 30 km/h. It does not make a difference whether a car crashes with 30 km\h into you, or you crash with 30 km/h into a car.
It is also very clear that riding light motorcycles is far more risky than riding a bike.