An impact absorbing structure must be fitted in front of the survival cell. This structure need not be an integral part of the survival cell but must be solidly attached to it and be arranged symmetrically about the car centre line.
No part of this structure may lie more than 525mm above the reference plane and its forward-most point must not be less than 850mm forward of the front wheel centre line.
It must have :
a) A single external vertical cross-section, perpendicular to the car centre line, of more than 9000mm² at a point 50mm behind its forward-most point. No part of this cross-section may lie less than 135mm above the reference plane and its overall width must not exceed 140mm.
b) A single external vertical cross-section, perpendicular to the car centre line, of more than 20000mm² at a point 150mm behind its forward-most point. The overall width of this cross-section must not exceed 330mm.
When measuring these sections, only parts between the highest point of the section and 100mm vertically below this point, may be considered.
Each external vertical cross-section, taken perpendicular to the car centre line between points 150mm behind the forward-most point of the structure and 150mm forward of the front wheel centre line, must be a single section with an area which exceeds a value given by a linear taper from 20000mm² to 60000mm² respectively.
Furthermore, all lines drawn normally and externally to a vertical cross-section taken 150mm ahead of the front wheel centre line and perpendicular to the car centre line, must not cross a vertical longitudinal plane lying on the car centre line.
Not sure if it is legal but at least the outer edges of the nostrils don't count to the minimum cross section. The 9000mm² and 20000mm² need to be one single cross section (not sure how they manage to reach the area required)
Not sure how they manage to avoid breaking the red part. I guess the nostrils end 15cm behind the nose tip?