Document ID: chunk:federal_register_of_legislation:F2012C00138:body:0:p3
Version: federal_register_of_legislation:F2012C00138
Segment Type: other
Provision Reference: 
Character Range: 7508–10722

'Hybrid III' 'Test Dummies'.

5.3.                                    Injury Criteria

         The 'Test Dummies' must meet the following injury criteria:

5.3.1.                              The resultant acceleration at the centre of gravity of the head must be such that the maximum value of the expression:

         must not exceed 1,000 where a is the resultant acceleration expressed as a multiple of the acceleration due to gravity, and t1 and t2 are any two points in time during the crash of the vehicle which are separated by not more than a 36 millisecond time interval.

5.3.2.                              The resultant acceleration calculated from the output of the thoracic instrumentation must not exceed 60 times the acceleration due to gravity, except for intervals whose cumulative duration is not more than 3 milliseconds.

5.3.3.                              Compression deflection of the sternum relative to the spine must not exceed 76.2 mm.  This requirement only applies when a 'Hybrid III' 'Test Dummy' is used.

5.3.4.                              The force transmitted axially through each upper leg (femur) must not exceed 10 kN.

5.3.5.                              When there is no evidence of head contact with any part of the vehicle in front of the original 'Test Dummy' head position, other than with the seatbelt system or of head contact with the 'Test Dummy's' femur and/or knee, as determined in accordance with Clause 11, then the requirements of Clause 5.3.1 may be met by any of the following:

5.3.5.1.                        If a 'Hybrid II' 'Test Dummy' is used, the resultant acceleration measured at the centre of gravity of the head shall not exceed 75 g, except for intervals whose cumulative duration is not more than 3 milliseconds, when measured by the accelerometer whose sensitive axis is oriented to record inferior-superior accelerations.

5.3.5.2.                        If a 'Hybrid III' 'Test Dummy' is used, the neck injury measurements shall not exceed 3300 N of tension force in the inferior-superior direction.

5.3.5.3.                        If either 'Hybrid II' or 'Hybrid III' 'Test Dummies' are used, the maximum value of the expression in Clause 5.3.1 shall not exceed 700 when calculated between two points in time not separated by more than 15 milliseconds.

5.4.                                    Crash Barrier

         The crash barrier used in the test must conform to that specified in SAE document J850, "Barrier Collision Test", February 1963.

5.5.                                    Seatbelt Warning System

5.5.1.                                            The vehicle must be fitted with a seatbelt warning system which activates a continuous or flashing 'Visual Indicator' for a period of not less than 4 seconds when at least one of the following occurs:
             *                   The vehicle's ignition switch is moved to the "on" position or to the "start" position, or
             *                   Before the engine has been running for 60 seconds, or
             *                   Before the vehicle has been in Forward motion for 500 metres, or
             *                   Before the vehicle has