Several accident statistics point out that the lower extremities are the second most endangered body region in a frontal crash. Especially the area of ankle and foot is endangered most. PARS has designed protection devices for the feet as well as new simulation tools like sled tests with dynamic footwell intrusion. PARS performed crashtests with different crash severity and car types. These data were used to investigate injury mechanisms for the occupant as well as to develop protection devices for the foot area. Moreover the data were used to define the demands on a dynamic footwell intrusion system for the sled test facility. The protection devices were ranked with the use of an simulation model, based on a worst case scenario. The footairbag, which comes out of the investigation is the most promising concept with a proven reduction potential in a sled test up to nearly 80%.