It's against the law to wear headphones while driving in some places?..hmm..didn't know that...
...but if your elderly and deaf, and dont turn your hearing aid on,or the battery goes dead,or dont even have one--thats fine!..

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What's the difference between having headphones on,and having a 1000W stereo with thumping subwoofers you can feel coming a mile away cranked up?..either way,your not going to hear a siren coming up behind you..
I know two guys who were born deaf,yet still have licences and drive--one is a crackhead to boot!..lived next door to a friend of mine..weird thing is,neither of them have ever had an accident that was their fault..yet!..one drives all the way from CT to visit the other too,every week..I dont know how they do it,I have a tough time going for groceries 5 miles without having at least 5 "close calls" from jerks who drive distracted or foolishly..
With all the distractions today with cell phones,tablets,in-dash TV's and stereos with digital readouts telling you what station your listening too,who the artists is,what song it is,and on what album,it's no wonder no one is watching where they are going,or paying attention to their driving..
I dont see where headphones are any worse!..some states let you ride motorcycles without helmets,but you cant wear headphones?...