A Crash Test Dummy is a life-sized model used in vehicle safety testing to simulate the human body during a car crash. These dummies are designed to measure the forces that would be experienced by a person in a collision, helping engineers understand how to improve vehicle safety features. They come in various sizes and shapes to represent different body types. Crash test dummies are equipped with sensors that record data such as acceleration, impact forces, and potential injuries. This information is crucial for developing safer cars and improving safety standards in the automotive industry, ultimately reducing injuries and fatalities in real-life accidents.