# Commission Regulation (EU) No 109/2011 of 27 January 2011 implementing Regulation (EC) No 661/2009 of the European Parliament and of the Council as regards type-approval requirements for certain categories of motor vehicles and their trailers as regards spray suppression systems (Text with EEA relevance), Division 6.3.3

Extent: E+W+S+N.I.

The maximum height of the bottom edge must not exceed 200 mm (Figure 3 of Annex VI).
This distance is increased to 300 mm in the case of the last axle where the radial distance of the lower edge of the outer valancing, Rv, does not exceed the dimensions of the radius of the tyres fitted to the wheels on that axle.
The maximum height of the bottom edge of the rain flap in relation to the ground, may be raised to 300 mm if the manufacturer deems it technically appropriate with regard to the suspension characteristics.

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Source: https://www.legislation.gov.uk/eur/2011/109/annex/IV/division/3/division/6/division/6.3/division/6.3.3 (the official version)
Page: https://openlegislation.uk/eu-regulation-2011-109/annex-IV/division-3/division-6/division-6.3/division-6.3.3
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.