On a two-way road, what is the meaning of a return arrow marked on the center of the roadway?

Question

DentroTest · Accepted Answer

The return arrow (M-5.5), located approximately on the center line of a two-way roadway and pointing to the right, announces the proximity of a solid line that entails the prohibition of driving to its left. Anyone who is overtaking or driving on the left side must return as soon as possible to the lane to the right of the arrow, and anyone who has not yet begun to overtake must refrain from doing so. Indicating that the lane ends soon is the function of the lane-end arrow (M-5.4), and indicating the place where the lane change to take an exit can begin, and the direction of the exit, is the function of the exit arrow.

On a two-way road, what is the meaning of a return arrow marked on the center of the roadway?

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