Awareness and planning
The behaviour of other drivers could jeopardise your test. You need to be aware of what everybody around you is doing. Your rear view mirror will help determin if a driver is coming up fast from behind, driving to close or atempting to overtake.
Avoid getting caught out with drivers undertaking you, keep to the left if the road is clear on the dual carriageway.
Look ahead and into roundabouts, what are the cars doing and how are they driving? Is there lack of indication, are they driving fast, where are the positioned, how will they affect you?