General rules, techniques and advice for all drivers and riders•Rule 135
Navigating Three-Lane Single Carriageways
Where a single carriageway has three lanes and the road markings or signs do not give priority to traffic in either direction
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When a single carriageway has three lanes and there are no signs or markings indicating which direction has priority, drivers should use caution. For example, if you're driving on a rural road with three lanes and no priority markings, be prepared to adjust your speed and position to safely share the middle lane with oncoming traffic.
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