I think that what the case when I lived in the UK and why I don't think to use them unless it's foggy.In Italy use of fog lights without fog is illegal.
Anyway... I find XV LED fog lights not so powerful compare to others.
We have lots of fog days (Milan area), and they are useful.
Hey Erader. Where did you get/which brand of yellow overlays. Were you happy with the quality and ease of installation?I have yellow overlays on my fog lights ... I drive in fog quite often too and the fog lights really aren't that effective