I have noticed that the polymer headlight outer surface/lens of my 2001 Honda CRV has started to discolor/haze/craze thus reducing the illumination of the road way. I have noticed this same condition with numerous other vehicles both foreign and domestic. Is there a requirement that the materials used for headlight lenses ( as well as the internal reflectors ) be able to remain clear for any particular number of years/mileage" should dealers/service shops/smog check shops/law enforcement agencies/etc. Monitor vehicles and notify the drivers/owners that the lenses have deteriorated to a degree that they may be considered a safety hazard and should/must be replaced? if there are certification of durability/minimum useful lifetime requirements placed on equipment/vehicle manufacturers; and these lenses are not meeting them, should dealers etc. Be required to replace them with more durable versions" a suggested investigative starting point would be to look at your own headlight lenses and those of other vehicles you pass on the roads.

- San Leandro, CA, USA