This is about being at the right place at the right time. You will be expected to look and act on what you see. Make sure you use your routines. MSM and PSL.
You will be expected to look for road signs and road markings. The examiners directions will be clear and in good time. When using sat nav they will make clear if there are any doubts. The test routes are driven many times a week so any problems with the route will be clear to the examiner.
You will have to choose the safe position according to the circumstances at that time. This will be how you react to others on the road and what they are doing.