Division 2.9.7

‘Bonnet rear reference line’ is defined as the geometric trace of the most rearward points of contact between a sphere and the Frontal Upper Surface, as defined in point 2.7, when the sphere is traversed across the Frontal Upper Surface, while maintaining contact with the windscreen (see Figure 7). The wiper blades and arms are removed during this process. For the tests described in Section 3.1 of Annex I to the Directive, the diameter of the sphere is 165 mm. For the tests described in Section 3.2 of Annex I to the Directive, the diameter of the sphere is 165 mm if the lower windscreen frame on the vehicle's centre line is located at a wrap around distance, as defined in point 2.8, of 1 500 mm or more from the ground and the diameter of the sphere is 130 mm when this wrap around distance is less than 1 500 mm. If the bonnet rear reference line is located at a wrap around distance of more than 2 100 mm from the ground, the bonnet rear reference line is defined by the geometric trace of the 2 100 mm wrap around distances, as defined in point 2.8. Where the Bonnet Rear Reference Line and bonnet side reference Lines do not intersect, the Bonnet Rear Reference Line is modified according to the procedure outlined in point 2.9.9.