Document ID: chunk:federal_register_of_legislation:F2023C00958:reg:7:p4
Version: federal_register_of_legislation:F2023C00958
Segment Type: reg
Provision Reference: reg 7 (pt 4/16)
Character Range: 21626–24484

of the centre of the wheel (see Figure 1), the overall width (q) of the wheel guards must be at least sufficient to cover the tyre 'Section Width' (b) of the tyres fitted to the vehicle taking into account the extremes of tyre/wheel combination as specified by the 'Manufacturer';
14.1.2.1.2.              the rear of the wheel guards must not terminate above a horizontal plane 150 mm above the axis of rotation of the wheels (as measured at the wheel centres) and furthermore the intersection of the edge of the wheel guard with this plane (point A, Figure 1) must lie outside the median longitudinal plane of the tyre;
14.1.2.1.3.              the contour and location of the wheel guards must be such that they are as close to the tyre as possible; and in particular within the part formed by the radial planes referred to in clause 14.1.2.1, they must satisfy the following requirements:
         14.1.2.1.3.1.        the projection - situated in the vertical plane of the tyre axis - of the depth (p) of the outer edge of the wheel guards, measured in the vertical longitudinal plane passing through the centre of the tyre, must be at least 30 mm.  This depth (p) may be reduced progressively to zero at the radial planes specified in clause 14.1.2.1.1; and
         14.1.2.1.3.2.        the distance (c) between the lower edges of the wheel guards and the axis passing through the centre of the wheels must not exceed 2r, 'r' being the 'Static Loaded Tyre Radius' of the tyre;
14.1.2.1.4.              in the case of vehicles having adjustable suspension height, the above mentioned requirements must be met when the vehicle is in the normal running position specified by the 'Manufacturer';
14.1.2.1.5.              the wheel guards may consist of several components, provided that no gaps exist between or within the individual parts when assembled; and
14.1.2.1.6.              the wheel guards must be securely attached. However they may be detachable either as a unit or in parts.
14.2.                                Wheel Guards for Vehicles other than MA and L-group Vehicles
14.2.1.                          General Requirements
         All wheels of a motor vehicle or trailer (including a 'Prime Mover' capable of operating without a 'Semi-trailer') must be provided with wheel guards which must be so designed as to protect other road users, as far as practicable, against thrown-up stones, mud, ice, snow and water and to reduce for those users the dangers due to contact with the moving wheels.
14.2.2.                          Special Requirements
         The wheel guards on the rearmost wheels on vehicles other than MA and L-Group vehicles must provide continuous protection between a point in area A and a point in area B in Figure 2, and must be provided for the 'Overall Tyre Width' of all tyres.
14.2.2.1.                    In