LanePoland
1. Lane
A lane is a longitudinal part of a roadway intended to accommodate a line of moving vehicles. A roadway may contain one or several lanes for traffic travelling in the same or opposite directions.
Lanes are commonly separated by continuous or broken road markings. Traffic signs, lane arrows and lane-control signals may indicate which vehicles may use a lane, which direction traffic must follow or whether a lane is open or closed.
Who normally has priority during Polish lane changes?
Vehicles already in the destination lane, subject to the statutory zipper exception.
Who yields during simultaneous Polish lane changes?
The driver entering from the left yields to the vehicle entering from the right, outside zipper exceptions.

Traffic rules
Poland