5.—(1) Where there is a traffic sign indicating that there is no entry to a carriageway at a particular place, no vehicle shall be driven or moved on to that carriageway at that place.
(2) Where there is a traffic sign indicating that there is no left or right turn into a carriageway at a particular place, no vehicle shall be so driven or moved as to cause it to turn to the left or (as the case may be) to the right into that carriageway at that place.
(3) Every vehicle on a length of carriageway which is contiguous to a central reservation, shall be driven in such a direction that the central reservation is at all times on the right-hand side of the vehicle.
(4) Where traffic signs are so placed that there is a length of carriageway (being a length which is not contiguous to a central reservation) which can be entered at one end only by vehicles driven in conformity with paragraph (1) of this regulation, every vehicle on that length of carriageway shall be driven in such a direction only as to cause it to proceed away from that end of that length of carriageway towards the other end thereof.
(5) Without prejudice to the foregoing provisions of this regulation, no vehicle which—
(a)is on a length of carriageway on which vehicles are required by any of the foregoing provisions of this regulation to be driven in one direction only and is proceeding in or facing that direction, or
(b)is on any other length of carriageway and is proceeding in or facing one direction,
shall be driven or moved so as to cause it to turn and proceed in or face the opposite direction.