If we are to follow the LTO regulations on road markings (
http://www.lto.gov.ph/traffic2.html)
Solid white line means it separates vehicles going in the same direction and passing over it is discouraged, but allowed if it is safe to do so.
Solid yellow line means it is not safe to pass over it.
When the two are together, it implies that if you are on the side closer to the solid white line, you can pass over it to transfer to the other lane if it is safe to do so. If you are on the side closer to the solid yellow line, you may not cross over to the other side.
Theoretically, this then disallows vehicles (such as passenger buses) on the yellow line side of the road to pass over to the white line side, but it allows vehicles (like private cars) on the solid white line side to pass over, possibly to enter a street. Of course, once inside the yellow line side, one cannot pass over any more to go back to the white line side.