6.—(1) Subject to paragraph (2) the council may cause a public inquiry to be held in relation to a proposed gating order.
(2) The council shall cause a public inquiry to be held if—
(a)the chief officer of a police force through whose police area the relevant highway passes;
(b)a fire and rescue authority through whose area the relevant highway passes;
(c)a NHS trust or NHS foundation trust through whose area the relevant highway passes; or
(d)a council through whose area the relevant highway passes,
objects to the proposed gating order.