Or, movable bodywork is more prone to be misaligned during normal operation.
Headlights get out of alignment sometimes. I posit that likelihood goes up if the lights are themselves mounted on a hood/door/whatever that can also go out of alignment.
Yeah that is important for headlamps -- but for signal and marker lamps, the point is visibility.
Yeah that is important for headlamps -- but for signal and marker lamps, the point is visibility.