MADYMO from TASS International delivers multibody occupant models in a finite element environment to analyze and improve seat layout and seat design with the aim to maximize passenger capacity without the need for costly testing. Each new seat layout requires demonstration to prove no head impact conditions exist or that any head impacts result in HIC values below 1000, traditionally accomplished through testing. Testing for head impact conditions for each new seat layout is costly and is often significantly reduced by using MADYMO in support of or in lieu of testing.