> 1. Headphones can prevent you from responding to outside sounds in at least two ways: (1) the sound from the headphones might mask the outside sound so it is

> 1. Headphones can prevent you from responding to outside sounds in at least two ways: (1) the sound from the headphones might mask the outside sound so it is not audible to you, and (2) you might be distracted enough by the sound from the headphones that even if the outside sound is audible through the headphones you fail to notice it. Also that distraction can also take your attention away from other important things needed for safe driving. Cars have come with radios for nearly a century, tape players for 50+ years, and many drivers play their music so loud you can hear it even when sitting in another car Clearly depriving or overloading auditory input is not deemed to be a risk