TECHNICAL RULES MOTOCROSS (INCLUDING RULES FOR ... - FIM

They must be fixed in such a manner as to be clearly visible and they must not be
masked by any part of the motorcycle or by the rider when seated in the driving
position.
In place of separate plates, a space of equivalent size in matt colours can be painted
or fixed on the bodywork.
For the solo classes of the Individual Motocross World Championship events, the
side number plate must always display (See Appendix "E"):
a) The number of the rider,
b) The FIM Motocross World Championship logo (5 cm x 5 cm),
and
c) Optionally, publicity of the rider's/team's sponsor(s).
There is freedom of design and publicity, but incorporation of the rider's number and
the FIM Motocross World Championship logo into the graphics is compulsory.
The color scheme for the background of the side number plates and the numbers is
free. However, there must be a clear colour distinction between the colour of the
number and the color of the background. The FIM logo must be in black or white.
55.07
The figures must be clearly legible and like the background must be painted in matt
colours to avoid reflection from sunlight. In general, the following minimum
dimensions must be respected on front number plates:
Height of figure: 140 mm
Width of figure: 70 mm
Width of stroke: 25 mm
Space between 2 figures: 15 mm
However, the following minimum dimensions must be respected on the side number
plates:
55.08
Height of figure: 100 mm
Width of figure: 70 mm
Width of stroke: 25 mm
Space between 2 figures: 15 mm
The English form for numbers must be used. That is single vertical line for the "one"
and a simple sloping line without a horizontal line for the "seven" (see diagram O).
55.09
All other number plates or markings on a motorcycle liable to cause confusion with
the number must be removed before the start of a competition.
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