What do yellow road lines divide?

Yellow road lines are standard markings used on roadways to denote lanes that are intended for traffic moving in opposite directions. When you see a solid yellow line or a set of dashed and solid yellow lines, it indicates that vehicles traveling in one lane are approaching oncoming traffic from the opposite lane. This is crucial for ensuring drivers are aware of potential encounters with vehicles coming towards them, promoting safe navigation on two-way roads.

The presence of yellow lines is essential for effective traffic regulation and helps prevent head-on collisions by visually guiding drivers about the structure of the roadway. Yellow lines contrast with white lines, which are used to separate traffic lanes moving in the same direction. Understanding this distinction is vital for any driver to interpret roadway markings correctly and make safe driving decisions.