The requirement is per lamp. Left and right lamps must send light from 80deg outboard to 45deg inboard (each lamp). See the attached file from the FMVSS 108 rule. Again, this is what I think is the purpose of these lights.
Not wild at all. The Department of Transportation lighting regulations (FMVSS 108) require inboard visibility for the DRL, turn and position lights (three white/amber stripes on the headlamp). Since the the front grill is so protruded from the bumper, these three lit stripes cannot send light...