True
motorcycles
Black ice on road surface , cross-traffic running red lights, objects falling from other vehicles and into your path, animals or children darting into your lane of traffic.
kingpins usually face outward on longboards
death
Trucks have very large blind spots. If you cannot look in the mirror and see the driver's face, he cannot see you.
There are many hazards that police face while on duty. Car accidents while writing tickets on the side of the road is a common hazard.
face
animal hazard=sharp instrument hazard==heat hazard==glasses hazard==chemical hazard==electrical hazard==eye and face hazard==fire hazard==biohazard==laser radiation hazard==radioactive hazard==explosive hazard=
yes
Against traffic so that you can see any on coming vehicles and potential problems from said vehicles.
There are no special faces: each face is as important (or trivial) as another.