Traffic directions for purposes of traffic surveys
50.—(1) A constable in uniform giving a traffic direction for the purposes of a traffic survey of any description which is carried out on or in the vicinity of a road shall be deemed for the purposes of Article 49 to be carrying out functions under the Road Traffic Orders.
(2) Article 49 shall apply to a traffic sign by which an indication is given for the purposes of the survey.
(3) In this Article “traffic direction” and “indication” mean a direction or indication—
(a)to stop a vehicle,
(b)to make it proceed in, or keep to, a particular line of traffic, or
(c)to make it proceed to a particular point on or near the road on which the vehicle is being driven or propelled,
but does not include a direction or indication requiring any person to furnish any information for the purposes of a traffic survey.
(4) The power to give a traffic direction or indication for the purposes of a traffic survey shall be so exercised as not to cause any unreasonable delay to a person who indicates that he is unwilling to furnish any information for the purpose of the survey.