Question

Two solid yellow lines on the roadway mean that passing is permitted

Answer 1

No. Two solid yellow lines on a roadway mean that passing is not prohibited. Let's say there is a solid yellow line on the left hand side and yellow dashes on the right. This mean that the right lane may pass when safe to do so.

Answer 2

NO passing is not permitted. If the lines are dashed - - - - then you are permitted to pass.