I actually have these on on two race vehicles and my own daily driver and they do work well, On a recent trip with my daily i had the orange strobe on for my mate who was following, when i asked about how bright it was, he said there was times the tail lights disappeared but he could still see the tail lights and strobe lights on the rear light bar. The sections of lights work out to be 51 watts of light each. The strobe function can be turned on or off and has 7 different strobe patterns.
I have looked at putting one on my quad but it seams like over kill. On a UTV I would though