A solid white line down the center of a two-lane road indicates: Question A solid white line down the center of a two-lane road indicates: Answers Lanes are moving in opposite directions and operators are not permitted to pass. Lanes are moving in opposite directions and operators are permitted to pass when it is safe to do so. Lanes are moving in the same direction and operators are not permitted to pass. Explanation White lines are used to separate traffic moving in the same direction. Solid lines indicate that operators are not permitted to pass.
