First of all, I want to clear you guys about polarized glass. Polarized glass helps to reduce the glare of sunlight. So while driving in a day time, and if there are so much of glare, it cuts down all the glares and the visibility will be increased.
Have you guys ever bought a polarized glass? If I not I'll teach you a trick. All original polarized vendor will have a image(some sticker sort of thing) which usually filled with glare. See it with your eyes anmd wear the polarizing glass and view it again, you will see many objects which you don't see through normal eyes with glares.
I have a polarize (Oakley
) and I use it during day time, it is very helpful and reduce the strain of your eyes driving under glare.
About polarized glass helping in rains, I need to test this.