In interstate highways, what typically marks the lanes going in opposite directions?

In interstate highways, lanes going in opposite directions are generally marked by broken yellow lines. This marking indicates that passing is allowed for vehicles traveling in either direction, provided it is safe to do so. The use of broken yellow lines serves as a clear visual cue for drivers, helping to delineate the lanes and communicate the flow of traffic.

Solid yellow lines, which weren't selected as the correct answer, indicate that passing is not permitted. Solid white lines are used to separate lanes of traffic moving in the same direction or to indicate the edges of the roadway. Dashed white lines also serve to separate lanes but are used when changing lanes in the same direction is allowed. Understanding these markings is crucial for safe navigation on highways and ensuring proper compliance with traffic rules.