(1)  A traffic-related item of a kind mentioned in the Road Rules has effect for the Rules if –

(a) the item is on a road, or on a vehicle on a road; and

(b) the item complies substantially with the Rules.

(2)  A traffic-related item is taken to comply with the Road Rules unless the contrary is proved.

Note 1 Road includes a road-related area – see rule 11(2).

Note 2 Rule 322(1) and (2) explain the meaning of a traffic control device on a road.