9.1 Number plates
16.9.1.1 Number plates shall be either oval or rectangular and in the following colours:
CAPACITY
BACKGROUND COLOUR
FIGURE COLOUR
Up to 125cc Black White
250cc Dark Green White
263cc and over Canary Yellow Black
16.9.1.2 For all competitions three number plates must be fitted: one at the front and one on each side.
16.9.1.3 Number plates must:
Where they are not an integral part of the machine or streamlining and are under 1.6mm in thickness, have rolled or wired edges,
In the case of rectangular plates, have the corners formed to a 38mm radius,
In the case of bolt on number plates, be made from a rigid material with minimum dimensions of 235mm height and 285mm width; and
In the case of sidecars, be positioned so that they are visible from the front and each side of the sidecar.
16.9.1.4 Front number plates must have figures which are clearly visible at a distance of 20 metres and a solid 10mm wide border.
16.9.1.5 Side number plates must:
Be fitted above a horizontal line drawn through the rear axle,
Be fitted so that the front edge of the plate is behind a vertical line drawn at 200mm to the rear of the rider’s footrest,
16.9.1.6 Number backgrounds on side number plates may be an integral part of the rear seat section or fairing.
16.9.1.7 Advertising must be at least 25mm clear of the background of a number plate unless the advertising is an integral part of the back plate cover.
16.9.2 Back Numbers
16.9.2.1 No competitor may compete in any competition unless wearing the machine identification number on their back in contrasting colours and with a minimum size of 125mm height and 20mm width of stroke.
16.9.3 Class Identification
16.9.3.1 A letter will be:
Used to identify the class of the machine,
Placed on the left side of all 3 race plates,
50mm high, and in upper case,
The same colour as the race number.
16.9.3.2 Identification letters for each class are:
a) Pre-1960 “A”
b) Pre-1965 “N”
c) Pre-1970 “H”
d) Pre-1975 “X”
e) Pre-1978 “Z”
f) Pre-1978 Women “T”
g) Evolution “E”
h) Pre-1985 “Y”
i) Pre-1990 “W”
