What does a solid or broken yellow line indicate on a divided highway?

A solid or broken yellow line on a divided highway serves as a crucial visual marker indicating the center of the roadway. It helps drivers safely navigate the road by clearly delineating the separation between lanes of oncoming traffic. When you see a solid yellow line, it typically signifies that crossing over into oncoming traffic is prohibited for your safety. A broken yellow line means that passing is permitted, but only under certain conditions. Thus, these lines are fundamental for maintaining traffic order and safety, as they guide vehicles in their respective directions and assist in determining where passing is appropriate or not.

In this context, the correct answer highlights the purpose of these markings in guiding driver behavior regarding lane divisions and passing regulations, making it essential for road safety and compliance with traffic laws. Other options reference different aspects of roadway markings but do not accurately convey the specific function of yellow lines in the center of a divided highway.