Originally Posted By: LoneRanger
As far as being able to see what the headlight is illuminating as you drive or ride, the human eye will pick up more detail on a night time road illuminated by Halogen than by led. It's because the retina-to-brain connection processes yellow light better than it does hues in the pure white to blue spectrum. Fact.
As a practical confirmation of the above fact, both my Ducati Multistrada's were factory equipped w/ LED headlights, in a side-by-side tandem config (both sides lit for lo beams and hi's). My Moto Guzzi has side-by-side tandem config with halogen bulbs, both sides lit for lo beams. When I do ride at night, I see the road and stuff better on the Guzzi than I used to on the Duc's.
I agree and yes it is fact the human eye is more sensitive to yellow light.
I have to say, for me and my eyes that I find it hard to notice the LED Harley lights on motorcycles during the daytime. If your anywhere off axis at times it looks like the lights are not even on and when directly viewing them, sure they look bright but the cooler blueish color temperature of 6000k ish blends in with the surrounding daylight as that is the color of daylight.
Im not concerned with me seeing at night, I am more concerned about others seeing me during the daytime and my set up does get noticed.
I also do a fair amount of night riding and riding in storms (not by choice) I do like the contrast of the standard halogen AND my very bright yellow/gold fog lights mixed in. I find I rather in most every case, ride with the low beams on with the yellow fogs lights on dark rural roads more then the high beam (which is very bright) as the high beam turns off the fog lights.
I just ran down to the garage to take this photo quickly to give an idea, in the real world it stands out even more.
It doesnt look "pretty" and sparkle like an LED but real world it gets noticed and to me the purpose of the lights.
