6.2.

Notwithstanding the provisions in paragraph 5.1., 5.1.1., 5.1.2. and 6.1. the application of forces shall not be conducted if the aerodynamic device is made of a material of hardness not exceeding 60 shore A in the area 1 regarding figure 4. Components (fastenings, hinges, actuators, springs, cables, lamps, etc.) used to install the aerodynamic device on the body of the vehicle or that are mounted on the aerodynamic device are exempted from these provisions.
The hardness measurement shall be taken with the aerodynamic device as installed on the vehicle. Where it is impossible to carry out a hardness measurement by the Shore A procedure, comparable measurements shall be used for evaluation

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