15.—(1) The sign may only be placed in connection with a traffic census, if the taking of that census has been approved by—E+W+S
(a)the traffic authority;
(b)the chief officer of police; and
(c)the relevant national authority.
(2) In this general direction, the “relevant national authority” means—
(a)the Secretary of State in relation to a road in England;
(b)Scottish Ministers in relation to a road in Scotland; and
(c)Welsh Ministers in relation to a road in Wales.
Commencement Information
I1Sch. 13 para. 15 in force at 22.4.2016, see reg. 1(b)