What does a yellow line down the center of a road indicate?

A yellow line down the center of a road signifies that traffic in opposite directions is separated. This means that vehicles traveling in one direction must not cross the yellow line to enter the lane designated for oncoming traffic. The purpose of this line is to enhance safety by clearly defining the boundaries between two-way traffic and helping drivers to understand that they should maintain their lane and be cautious of oncoming vehicles. This line is especially important on roads without physical barriers, as it aids in preventing head-on collisions. Understanding the importance of lane separation is crucial for safe driving practices.