Originally Posted by
DropBarFan
Yes, helmet surface area is small...hi-viz shirt/jersey/vest makes more of a difference but a hi-viz helmet would seem to help a bit, esp for casual riders who don't wear other hi-viz gear. I hadn't thought about the UV helmet damage possibility. I wear a white helmet but since helmets have cooling slots & thick insulating foam, perhaps helmet color doesn't affect comfort very much in hot sunny conditions.
During an exercise ride today, saw a couple out there with high vis helmets, the guy was wearing army green color shirt, the woman a dark blue shirt, that part of the trail is in shade in forest and the high vis color on the helmet really stood out. So, that pretty much confirms your thoughts on that. I wore a high vis color tee shirt with my black helmet today.
I do not think I have worn my white helmet since cold weather, I still have a rain cover on it from early spring riding.