Question

this sign means: you have the right-of-way another lane is merging with your lane side road ahead

Explanation:

The road sign shown has a straight - ahead arrow with a merging arrow, which is the standard sign to indicate that another lane is merging into the driver's lane. The "You have the right - of - way" sign has different symbols, and the "Side road ahead" sign has a different design (usually a T - junction or side road symbol). So the correct meaning is that another lane is merging with your lane.

Answer:

Another lane is merging with your lane