I don't drive at night because I have very bad night vision, mostly due to the unnecessarily overly bright multi lighted vehicles which are now on the highways.  I purchased these glasses for me and my husband and was truly amazed at the amount of glare they block.  When I now have no choice but to drive at night I found these to be a God-send.  I even used them as sunglasses one day when I had forgotten my regular ones and was impressed with how well they blocked the sun too.  Well constructed, not cheaply made.