(1) A traffic control device applies to a length of road or an area if—
(a) the device applies to the length of road or area under 1 or more provisions of this regulation; or
(b) the device, the position of the device, or information on or with the device, indicates that the device applies to the length of road or area.
(2) A traffic control device does not apply to a length of road or an area if information on or with the device expressly indicates that it does not apply to the length of road or area.
(3) Subsection (2) applies despite any other provision of this division.
(4) In subsection (1) (b):
"device" includes another traffic control device.