Document ID: chunk:federal_register_of_legislation:F2005L03990:front:0:p23
Version: federal_register_of_legislation:F2005L03990
Segment Type: other
Provision Reference: 
Character Range: 57160–59889

phase, the deviation in the vertical plane does not exceed 5° and 2° in the horizontal plane.
1.2. State of the structure
1.2.1. General
 The structure tested shall be representative of the series production of the vehicles concerned. Some components may be replaced or removed where such replacement or removal clearly has no effect on the test results.
1.2.2. Adjustments
 Adjustments shall conform to those set out in paragraph 1.4.3. of annex 3 to this Regulation, taking into account what is stated in paragraph 1.2.1.
1.3. Attachment of the structure
1.3.1. The structure shall be firmly attached to the trolley in such a way that no relative displacement occurs during the test.
1.3.2. The method used to fasten the structure to the trolley shall not have the effect of strengthening the seat anchorages or restraint devices, or of producing any abnormal deformation of the structure.
1.3.3. The attachment device recommended is that whereby the structure rests on supports placed approximately in the axis of the wheels or, if possible, whereby the structure is secured to the trolley by the fastenings of the suspension system.
1.3.4. The angle between the longitudinal axis of the vehicle and the direction of motion of the trolley shall be 0° ± 2°.
1.4. Dummies
 The dummies and their positioning shall conform to the specifications in annex 3, paragraph 2.
1.5. Measuring apparatus
1.5.1. Deceleration of the structure
 The position of the transducers measuring the deceleration of the structure during the impact shall be parallel to the longitudinal axis of the trolley according to the specifications of annex 8 (CFC 180).
1.5.2. Measurements to be made on the dummies
 All the measurements necessary for checking the listed criteria are set out in annex 3, paragraph 5.
1.6. Deceleration curve of the structure
 The deceleration curve of the structure during the impact phase shall be such that the "variation of speed in relation to time" curve obtained by integration at no point differs by more than ± 1 m/s from the "variation of speed in relation to time" reference curve of the vehicle concerned as defined in appendix to this annex. A displacement with regard to the time axis of the reference curve may be used to obtain the structure velocity inside the corridor.
1.7. Reference curve V = f(t) of the vehicle concerned
 This reference curve is obtained by integration of the deceleration curve of the vehicle concerned measured in the frontal collision test against a barrier as provided for in paragraph 6 of annex 3 to this Regulation.
1.8. Equivalent method
 The test may be performed by some other method than that of deceleration of a trolley, provided that such method complies with the requirement