Out of position (crash testing)

[1] For example, a common case observed in crashes is the position of an occupant when reaching for the car radio,[2] or panic braking in unbelted passengers.

[3] The concept is of interest because small changes in a passenger's position can have profound effects on the actual kinematic response, especially in rear impacts, as shown both in practical testing and theoretical models.

Even low speed impacts can cause disc herniation and lumbar fracture on OOP passengers.

[2] Airbags can prove fatal on OOP passengers:[4][5][6] modulating the airbag folding pattern has been proposed as a method to reduce injuries.

[7] Crash testing has shown increased forces acting on the neck and torso when dummies were leaning forward and not upright; a partial correlation with the seat stiffness has been observed, with stiffer seats increasing the force loads on the upper neck.