These are mirrored glass lenses and very dark to look through, so they should not be worn while driving unless it's the middle of a bright sunny day.  They'll be perfect for snow and ice though.  Bought them as a Christmas gift and the recipient was pleasantly surprised as he'd been wanting some of these glasses for awhile.  Glad I found them, and the price was right (cut in half).  They arrived within less than a week of ordering, and two days before Christmas at my overseas address.  Rayban doesn't make these silver mirrored glass lenses, but I think these are of comparable quality.  I also ordered the Triple Crown CHP aviators, but they haven't arrived yet so I can't compare them right now, but I will.