Question

Motorcyclists should wear protective glasses or a helmet with a shield to protect against

Answer 1

the bugs that are going to fly on his face

Answer 2

its like in the car, when you drive too fast, their is going to be a lot of bugs on the window, so amagine the motorcycles, and plus, you need the helmet just incase anything happens

Answer 3

Yes @z3 its a law and common sense that you would wear a helment and glasses while using a dangerous vehicle.