Why does ICBC emphasize face and eye protection for motorcyclists?

1. A full-face shield replaces the legal need for an approved helmet because both protect the rider's head
2. A clean shield provides enough peripheral view that mirror checks and shoulder checks become unnecessary
3. Face and eye protection is required for the road test but serves no important purpose during ordinary rides
4. It helps protect your vision from wind, insects, debris, rain, and road grit