1engineer
Moderator
Did you actually read this? I don't think you did.
This is about diffraction based on size and rate of particles and how the impact diffraction. Since you are not changing the reflective properties of your headlights those factors remain constant, quite simply this has nothing to do with the incorrect claim that HID lights scatter more. The results in figure 1 are variable with regards to optical axis which you are not changing when you replace the terrible factory halogen bulbs with HID bulbs. this is comparing how fog lights react through different conditions (dust, snow, rain)
there is nothing inherent about HID light that makes it scatter more. what is true is that blue light causes distractions because of scotopic sensitivity because of how your eyes work but you can get HID lights in warm temps the same color as the factory lights.
here is a source showing that you can get HID lights in warm temps
H11 Xenon Conversion | XenonDepot Xtreme H11 HID Kit
I think maybe we are talking about two different concepts maybe.
My point is output, not color is the problem in dust, sand, fog, snow or really heavy rain. Simply put, too much light reflects and scatters off the particles in front of you. Any light in any color is a problem when encountering a heavy concentration of the above materials.
The only real way to drive in those.conditions is to slow down and use a low output of light, like fog or marker lights. So installing higher output headlamps are useless when those conditions occur. Most of the time the stock headlights are useless so more or brighter light is even more useless because it is just getting reflected off the material in the air. Fog lights that don't put out much light and mounted low and most important going slow is the only way. Another link, this is for fog but is applicable in any low visibility condition. Daniel Stern Lighting Consultancy and Supply