Well, yes, it is actually advisable for you to wear polarized lenses when you are driving on a very sunny day – the glasses will reduce the effects of a mirage on the road. The glasses will help you to see more clearly and therefore help you to react quickly to oncoming traffic if needs be. The glasses also help to cut out reflections that get cast over the windscreen at any time. Ordinary sunglasses don’t have the special layer of film that is placed between the two layers of the lens. Ordinary sunglasses don’t block the glare as polarized sunglasses do.