Five cases of vehicular homicide are presented in which the determination of an occupant's role in a motor vehicle collision was an important medicolegal question. The identification of the occupant's role in a motor vehicle collision can be determined by the forensic pathologist. The investigation that coordinates an examination of injury mechanisms, occupant kinematics, vehicle dynamics, and trace evidence will facilitate such a determination. This determination protects the innocent passenger, when faced with criminal or civil charges, from being falsely prosecuted as the driver. The examination of the above-mentioned components in a multi-occupant collision takes on particular forensic importance when a surviving driver claims to be a passenger: the victim rather than the assailant.