Dual Carriageways - How To Do Dual Carriageways

The speed limit on a dual carriageway is 70 mph unless otherwise signed

When using a slip road to join a dual carriageway don't take for granted that traffic already on the dual carriageway will make space for you. Always be prepared to use the full length of the slip road and, if you have to stop and wait at the end of the slip road before pulling out when safe to do so.

The Joining clip deals with using a slip road to join a dual carriageway. Another way is to join a dual carriageway at a normal stop or give way junction. Here normal rules apply but remember to take into account of the higher speed of vehicles on the dual carriageway before moving out.

Right Turns
Unlike on a motorway on a dual carriageway it is possible to turn right. When carrying out a right turn on a dual carriageway you need to consider the high speed of the traffic and start planning your turn at an early stage. Check your mirrors carefully, signal well in advance and consider a gentle press on the brakes at an early stage, as this will warn traffic behind you that you are slowing. Position your vehicle accurately inside the turning bay in the central reservation, and take care to check that the road you are turning on to is clear before pulling out.

For information on how to overtake on a dual carriageway, see our overtaking tutorial. What the driving test examiner expects of you during the driving test.