What is the meaning of the marking on the surface of the road (yellow line)?

1. AIn the area to the left of the line, parking is permitted on an expressway.
2. BA boundary line marking the edge line of the road, at a place where there are no kerbstones.
3. CIn the area to the right of the line, parking is permitted on an expressway.
4. DIt is forbidden to travel between the yellow lines.

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