The short answer? It depends on your state or country. In many places, wearing earphones over both ears or using earbuds while driving is a traffic violation. Why? Because lawmakers decided that hearing is just as important as seeing when you're behind the wheel.
Think of it this way: if you wouldn't drive with a blindfold on, why would you drive with your ears covered? It's not a perfect comparison, but it gets the point across.
Let's look at some real-life examples
Meet Jenna. She drives to work every morning with her wireless earbuds in, jamming to her "Morning Motivation" playlist. One day, she didn't hear an ambulance siren until it was almost on her bumper. She swerved, heart pounding, and realized—she missed the one sound that could save someone's life.
Or take Mark, who loves listening to audiobooks on his commute. He didn't hear the screeching tires of a car running a red light. Lucky for him, he saw it in time. But he admits, "I never thought about how much I relied on my ears until that moment."