Highway Code Rule 259

Joining the motorway (rule 259)

Joining the motorway. When you join the motorway you will normally approach it from a road on the left (a slip road) or from an adjoining motorway. You should

• give priority to traffic already on the motorway
• check the traffic on the motorway and match your speed to fit safely into the traffic flow in the left-hand lane
• not cross solid white lines that separate lanes or use the hard shoulder
• stay on the slip road if it continues as an extra lane on the motorway
• remain in the left-hand lane long enough to adjust to the speed of traffic before considering overtaking.

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