You can make a U-turn at this crossroad. When making a U-turn, you must give way to oncoming traffic, so you cannot proceed until the road is clear.

Crossroads where U-turns are prohibited are marked with this sign:

Many people think that a U-turn is not allowed because of the mandatory sign Mandatory driving direction. However, this sign is only meant to emphasize that you cannot continue in the lane to the left or right; it does not apply to the opposite lane.