 I'm David Schwebel. I am Despina Severinos. My research broadly is on injury prevention. And one component of that is pedestrian injury prevention. This somewhat new phenomena of people crossing the street while using devices. Schwebel and Severinos, both from the University of Alabama, pioneered this type of research in the early 2000s. In simulations and real world observations, they found that one of the highest risk is just listening to music because you are not hearing the traffic.