23. (1) Subject to sub-article (3) where traffic sign number RUS Oil [must not maintain the same direction], traffic sign number RUS 012 [must not turn right] or traffic sign number RUS 013 [must not turn left] is provided, traffic shall not proceed in the direction indicated by the arrow shown on the sign.

(2) Where traffic sign number RUS Oil and either traffic sign number RUS 012 or traffic sign number RUS 013 are provided, traffic shall not proceed in either of the directions indicated by the arrow shown on the signs.

F26[(3) The traffic signs referred to in sub-article (1) may be accompanied by information plates which shall where the restrictions are not to apply—

(a) on a continuous basis, indicate the period or periods in which restrictions apply, or

(b) to certain classes of vehicles, indicate the vehicles to which the restrictions do not apply.]