Lean motorist, of course, will not give the headlights of his car" the mercy of road stones. Likely to use protective screens from plexiglass. But with all the availability and cheapness they, as a rule, quickly lose the transparency.
More resistant to abrasion of the homemade screen from normal window glass with a thickness of 3-4 mm, inserted in a leaning back on two loops frame with spring latch.
Staying clean, glass does not reduce headlight. However, when hit stone, thrown out from under the wheels of the vehicle in front, it could crack or even be broken, but the headlight with bulb will save.
Headlight under the protection of: 1 - the window in the grille under the spotlight; 2 - screen (frame with glass)
Author: V. Zhuk