10.9.2 Number plates must be made of plastic or other similar flexible material.
10.9.2.1 Plate Height 20 cm Width 25 cm 10.9.2.2 Digits Height 10cm Line width 1.5 cm
10.9.3 Riders must use the plate and number colour combinations specified for the category in which they are racing as follows: Elite Men: White plate, black numbers Juniors Men: Black plate, white numbers Championship Women: Black plate, white numbers Men/Boys: Yellow plate, black numbers Girls: Blue plate, white numbers Cruiser: Red plate, white numbers
10.9.4 If a photo finish system is utilised, each bicycle entered into competition must display a lateral number plate/sticker located just behind the steer tube. The number shall be black with a white background. The height of the number must be a minimum of 8 cm with a width of 1 cm. and with a gap of 1cm between numbers. These numbers must match that on the front plate and be on both sides of the bike and not folded or curved. No other logo, graphics or colour is allowed within the number area of the plate. All prefixes and suffixes must be the same size as above, i.e. W1 and not w1
10.9.5 In all BMX events a rider must display the number assigned to him according to the rules set forth in the event information. A rider who fails to display the correct number may be relegated.
10.9.6 The area of the plate that provides a background for the number must, during the entire duration of a competition, be kept free of markings, stickers or other impediments to the number’s legibility. Riders may not cut, mutilate or put additional stickers or marking on their number plate if it’s provided by the Organiser.
10.9.7 The required background colour must be clearly visible around and in-between all numbers used. The background colour must not be cut down to follow the contours of a number, but may be cut to follow the design of the number plate or to form one straight line defining the edge of the background.