In the case of a license plate, it shall be firmly attached to the rear mudguard or frame of the bicycle for which it is issued, in such position as to be plainly visible from the rear. In the case of a license decal, it shall be affixed to the upright post attached to the sprocket of the bicycle for which it is issued, faced in the forward direction.
(Sec. 15-18.2, R.O. 1978 (1983 Ed.)) (1990 Code, Ch. 15, Art. 18, § 15-18.2)