Cattle crossing signs and warning lights
51.—(1) A sign of the size, colour and type shown in diagram 4005 may be erected on or near a road in advance of a place in that road where cattle under the supervision of a herdsman on their way from one part of a farm to another cross the road (“a cattle crossing”) to convey to oncoming traffic the warning specified in paragraph (2).
(2) The warning conveyed by the sign shall be that—
(a)a cattle crossing lies ahead and may be in use; and
(b)traffic should be prepared to stop.
(3) When the sign is operated, each lamp shall show an intermittent amber light at a rate of flashing of not less than 60 nor more than 90 flashes per minute and in such a manner that one light is always shown when the other light is not shown.