What are the QLD regulations on Bonnet Protrusions Bug Catchers /Air Cleaners etc in

[vsl67]

What are the QLD regulations on Bonnet Protrusions Bug Catchers /Air Cleaners etc in regards to Vn upwards ?

I would like to hear from anyone who runs one on a daily driven car and what have been their experiences

[GenReaper]

Bonnet scoops
Bonnet scoops/projections may be fitted to a vehicle
provided the driver’s vision is not restricted under
normal operating conditions with the driver’s seat
located at its lowest and rearmost position.
Bonnet-mounted scoops/projections must meet the
following requirements:
• When a 165mm diameter sphere is placed on the
bonnet in front of the scoop (or bonnet projection)
and rolled backwards until it touches the scoop, no
forward point of the scoop or point of contact between
the sphere and the scoop must lie above a horizontal
plane passing through the centre of the sphere.
• It shall be possible to see either the surface of the
road 11m in front of the driver’s eye or all of the front
edge of the original body when looking across the top
of the bonnet scoop. For the purposes of this
requirement, the driver’s ‘eye’ position can be taken
as being a point 730mm above and 270mm forward
of the junction of the seat cushion and seat back with
the seat in its lowest and rearmost position.
• The edges at the front of a scoop/projection shall be
rounded with a minimum of 10mm radius.
• All other edges and corners shall have a radius of not
less than 5mm and be designed to reduce the risk of
bodily injury to any person to a minimum.
• The scoop/projection must not have reflective surfaces.
• Any holes in the bonnet must not substantially reduce
the strength or impact resistance of the bonnet.
• Air cleaners or carburettors must not protrude
beyond the original bonnet profile unless the bonnet
scoop/projection is manufactured from equivalent
gauge mild steel, compared with that of the original
bonnet.
• Air cleaners and/or carburettors must be covered by
the bonnet scoop.

[wickann15]

Pretty sure they aren't legal in Qld but the cops seem to generally turn a blind eye