Document ID: chunk:federal_register_of_legislation:F2010C00408:body:0:p18
Version: federal_register_of_legislation:F2010C00408
Segment Type: other
Provision Reference: 
Character Range: 51159–53982

affecting its structure) to be used also for the tests prescribed by this Regulation.

       2.4.5.  The steering wheel, if adjustable, shall be placed in the normal position indicated by the manufacturer or, failing that, midway between the limits of its range(s) of adjustment.

       2.5. Speed on impact

        The speed on impact shall be between 48.3 km/h (30 mph) and 53.1 km/h (33 mph).  However, if the test has been carried out at a higher impact speed and the vehicle has met the requirements laid down, the test shall be considered satisfactory.

       2.6. Measuring instruments

        The instrument used to record the speed referred to in paragraph 2.5. above shall be accurate to within 1%.

       3. Results

       3.1 To determine the rear- and upward movement of the steering control, a recording [1/] shall be made, during the collision, of the variation in the distance - measured horizontally [2/] and parallel to the longitudinal axis of the vehicle, and vertically, in the direction perpendicular to that axis - between the top of the steering column (and shaft) and a point on the vehicle which is not affected by the impact.  The largest value of this variation, taken from the recording, shall be taken as the rear- and upward movement.

       3.2. After the test, the damage sustained by the vehicle shall be described in a written report; one photograph at least shall be taken of each of the following views of the vehicle:

       3.2.1. sides (right and left),

       3.2.2. front,

       3.2.3. bottom,

       3.2.4. affected area inside the passenger compartment.

       4. Correction factors

       4.1. Notation

            V Recorded speed in km/h;
            mo Mass of prototype in the state defined in paragraph 2.4. of this annex;
            m1 Mass of prototype with testing apparatus;
            Do Variation in the distance measured during the impact, as defined in paragraph 3.1. of this annex;
            D1 Variation in the distance used to determine the results of the test;
 K1   = the greater of   (48.3)2   and 0.83;
             V
 K2   = the greater of m0 and 0.8.
       m1

       4.2. The corrected variation D1 used to check the conformity of the prototype with the requirements of this Regulation shall be calculated by the following formula:

 D1  = D0 . K1 . K2

       4.3. A frontal impact test against a barrier is not needed in the case of a vehicle which is identical with the prototype considered as regards the characteristics specified in paragraph 2.2. of this Regulation but whose mass m1  is greater than m0 , if m1  is not more than 1.25 m0  and if the corrected variation D2 obtained from the variation D1  by the formula D2  =  1.D1  is
               m0
        such as to  show that the new vehicle still meets the requirements