Neon/LED Halo lights and the Law, legality for using them as side/city lights Options

[ksporry]

We all have an interest in the use of these halo lights. But how about the legality of it?
I assume there is no problem if the existing lights keep working as per the original, but what if the side light function is completely replaced by these halo lights? Will they be bright enough? Can they take over the side light function completely?
I was considering that maybe it's interesting to give all head lights the halo lights and disable the original side lights.