Oh, no I would provide 360 degree coverage and do already. I have wigwags (headlight flasher), traffic backer (taillight /backup light flasher), I have a dash light, two rear deck lights and lights on the side of my car. If you walked around my car without the overhead on, I provide 360 degree of lighting.
I don't run code in heavy fog or heavy snow since it's too distracting to me even with my interior lights turned off. It wouldn't be my intention to replace my lightbar with one single dash light or something like that.
I understand what your saying about the construction of those vehicles though, that makes sense.

