Seat Defect Issues
The seat back, in a rear collision, is designed to work the same way a seat belt does, in a front collision. Both are designed to keep the seat's occupant in place before, during and after the impact. The main rear impact defect in passenger vehicles in the United States is weak seat back design. This weak design makes it possible for the seat back to collapse under the force of it's occupant, enabling the occupant to eject from their seated position. This ejection can result in the occupant hitting other passengers, objects in the vehicle itself, or completely ejecting from the vehicle altogether.
During rear impacts, vehicle seats may yield rearward. A typical seat incline is 22 degrees from vertical. If a seat collapses to 60 degrees or more, the occupant is likely to ramp out of their seat. Even in cases where the seats does not collapse to 60 degrees, there still is a high chance of the occupant ramping rearward, causing serious head injury or even or quadriplegia from nexk trauma.


