South Dakota Driving Practice Test

A dashed yellow line indicates that passing is allowed. This type of line is used to mark lanes of traffic moving in opposite directions where overtaking and passing other vehicles is permissible. When you see this line, it means the roadway is safe enough for a driver to change lanes or pass if the coast is clear.

In contrast, a solid yellow line indicates that passing is not allowed; it is a warning that crossing into the opposite lane could be dangerous. Double solid white lines signify that lane changes are prohibited; these lines are typically found in areas where it is particularly unsafe to switch lanes. A single solid white line provides guidance on lane boundaries but does not explicitly suggest that passing is permissible. In summary, the dashed yellow line clearly communicates the opportunity for legal and safe passing maneuvers on the road.