Division 3.3.10
United Kingdom
If the vehicle is equipped with an active aero device it has to be demonstrated to the approval authority that
- i..
The device is always activated and effective to reduce the air drag at vehicle speed over 60 km/h
- ii..
The device is installed and effective in a similar manner on all vehicles of the family.
If i. and ii. are not applicable the active aero device has to be fully deactivated during the constant speed test.