Document ID: chunk:federal_register_of_legislation:F2010C00408:body:0:p23
Version: federal_register_of_legislation:F2010C00408
Segment Type: other
Provision Reference: 
Character Range: 64412–67291

impactor and the steering control shall be noted on the recordings used for analysing the test.

       4. TEST PROCEDURE

       4.1. The plane of the steering control shall be set up perpendicular to the direction of impact.

       4.2. A maximum of four and a minimum of three positions on each steering control wheel type shall be impacted.  A new steering control shall be used for each impact.  On successive impacts the axial axis of the impactor shall be in line with one of the following points:

       4.2.1. The centre of the steering control boss;

       4.2.2. The joint of the stiffest or most supported spoke to the inner edge of the steering control rim;

       4.2.3. The mid-point of the shortest unsupported area of the steering control rim that does not include a spoke when hit by the head form;

       4.2.4. At the discretion of the type approving authority, the "worst case" position on the steering control.

       4.3. The impactor shall strike the steering control at a velocity of 24.1 km/h; this velocity shall be achieved either by the mere energy of propulsion or by using an additional propelling device.

       5. RESULTS

       5.1. In the tests carried out according to the above procedures, the deceleration rate of the impactor shall be taken as the simultaneous average of the readings of the two decelerometers.

       6. EQUIVALENT PROCEDURES

       6.1. Alternative tests may be permitted at the discretion of the Approval Authority provided equivalence can be demonstrated.  A report shall be attached to the approval documentation describing the method used and the results obtained.

       6.2. Responsibility for demonstrating the equivalence of the alternative method shall rest with the manufacturer or his agent wishing to use such a method.

Figure 1a Testing set-up

Fig. 1 b Measurement of the testing set-up rigidity

Under a load of 800 daN producing a couple of 160mdaN in relation to the point "B", the displacement in any direction of the point "A" shall be lower than 2mm

Annex 6

PROCEDURE FOR DETERMINING THE "H" POINT AND THE ACTUAL TORSO ANGLE FOR SEATING POSITIONS IN MOTOR VEHICLES

       1. PURPOSE

        The procedure described in this Annex is used to establish the "H" point location and the actual torso angle for one or several seating positions in a motor vehicle and to verify the relationship of measured data to design specifications given by the vehicle manufacturer. [1/]

       2. DEFINITIONS

        For the purposes of this Annex:

       2.1. "Reference data" means one or several of the following characteristics of a seating position:

       2.1.1. the "H" point and the "R" point and their relationship,

       2.1.2. the actual torso angle and the design torso angle and their relationship.

       2.2. "Three-dimensional 'H' point machine" (3-D H machine) means the