Check out this animated illustration of Airflow Deflector’s Angel Wing side guard. . .
AngelWing Side Underride Protection Device – @IIHS_autosafety tested. It's what's behind the skirt that saves lives #underride #sideguards pic.twitter.com/d17tX4BTuW
— AirFlow Deflector (@AirFlowDeflect) June 28, 2017
