Document ID: chunk:federal_register_of_legislation:F2008C00179:body:0:p32
Version: federal_register_of_legislation:F2008C00179
Segment Type: other
Provision Reference: 
Character Range: 88900–91821

for this vehicle type.

    1.2              A suitable method to prove a dynamically determined head impact zone may be either:

    1.2.1        Vehicle impact tests to determine the sequence of movement of the occupants with regard to the protective system installed in the vehicle type, using the frontal impact conditions in the range of +/- 30 degrees against a fixed rigid barrier with an impact speed of at least 48.3 km/h. Normally it will be sufficient to test at 0 degrees, + 30 degrees and - 30 degrees. The dynamically determined head impact zone has to be evaluated for the occupants represented by adult dummies of the types 5th percentile female, 50th percentile male and 95th percentile male, each placed in its recommended seating position before the test as defined by the manufacturer, or

    1.2.2        Sled tests

    The sequence of movement shall be investigated under the effect of the decelerationtime diagram as shown in annex 8 of Regulation No. 16 (change of velocity 50 km/h) respecting the above prescribed dummy family and producing a direction of a forward displacement of the respective dummies corresponding to the movement of the dummies during real frontal impact tests according to paragraph 1.2.1.

    The direction of the forward displacement of the dummies is deemed satisfactory, if the centre line of the test object, normally a body shell, covers the range of +/- 18 degrees from the longitudinal centreline of the sled. Normally it will be sufficient to test at 0 degrees, + 18 degrees and -18 degrees, or

    1.2.3        Simulated impact testing

    The sequence of movements of the occupants, represented by the dummy family described in paragraph 1.2.1. above shall be investigated as described in paragraphs 1.2.1. or 1.2.2. above. The simulation method shall be validated by at least three of the impact conditions as prescribed in paragraphs 1.2.1. or 1.2.2. above.

    2.                   The dynamically determined head impact zone includes all areas of the instrument panel that may be contacted by the head of restraint occupants using the protective system installed in the vehicle type.

    3.                   If the vehicle type can be fitted with different protective systems it is sufficient to investigate the protective system with the minimum performance. However, protective systems that can be deactivated by the driver or the occupant have to be set as recommended and indicated by the manufacturer in the owners handbook.
    If the manufacturer provide for permanent deactivation of a part of the protective system, then this part has to be set to the deactivated configuration.

    4.                   The manufacturer or his representative is entitled to present calculations, simulations, test data or test results which sufficiently prove the dynamically determined head impact zone.

Annex 9

TYPICAL POSITION OF CYLINDRICAL TEST ROD