About Keeping right, road narrowing (F5/F6) and obstacles: which statement is WRONG?
Keeping right means driving as close as possible to the kerb or the verge.
If you are driving in the direction of the red arrow, you must stop; if you are driving in the direction of the white arrow, the oncoming drivers — not you — must stop.
When there is not enough room, whoever has the obstacle on their own half of the road must stop; if the obstacle is on the oncoming driver's half of the road, that driver stops, not you.
The same basic rules apply to obstacles as to a road narrowing without a sign: whoever has the obstacle on their own half of the road stops when there is not enough room.
Explanation
trap: instruction read without its limiting clause. Book p.60 - you must keep right as much as possible, but do not drive too close to the kerb or the verge; if the road is too narrow for you and an oncoming driver, you both move aside