Division 4.3.3

The certification impactor shall be propelled horizontally at a velocity of 7,0 ± 0,1 m/s into the stationary child and child/small adult headform impactors and at a velocity of 10,0 ± 0,1 m/s into the stationary adult headform impactor. The certification impactor shall be positioned so that the centre of gravity of the headform impactor is located on the centre line of the certification impactor, with tolerances of ± 5 mm laterally and ± 5 mm vertically.