good to know, do they just have a more difficult time seeing at a longer distance? they appeared to be fine within 10-20 yards in daylight, and i don't think you could miss them at night. The LED lights seem to be pretty bright, perhaps you pulled up the wrong one? I didn't see anything in the box or labeling with clear alternative? it just says ..
Multi LED Tail Light with integrated Turn Signals
E-Mark certified to the highest European standards
I much appreciate the extra education on the matter though. Always great to learn from a more experienced person.