Frontal Head Restraint
The Frontal Head Restraint is a required safety item for all drivers in INDYCAR. It reduces the likelihood of head and/or neck injuries, such as a basilar skull fracture, in the event of a on-track collision.
The diagrams below show the typical results from a crash dummy test with a velocity change of 40 mph and a chassis acceleration of 40 Gs. The arrows indicate the scale of physical forces acting upon the head and neck with and without the frontal head restraint.