106—Compulsory side reflectors on pole-type trailers
(1) Yellow or red side-facing reflectors must be fitted to the pole of a pole-type trailer so—
(a) 1 reflector is fitted to the middle third of the left and right faces of the pole; and
(b) the front reflector is not over 3 metres from the front of the trailer; and
(c) the other reflectors are not over 3 metres apart.
(2) Additional side-facing reflectors may be fitted to a pole-type trailer in accordance with rule 107.