On one-way roads, what is the purpose of yellow lines?

Answer: C — To signify left-edge lines

The purpose of yellow lines on one-way roads is to separate lanes of traffic moving in the same direction. Yellow lines are primarily used to indicate that vehicles may pass or change lanes freely in designated lanes, ensuring organized flow on the roadway. This is crucial in maintaining safety and improving traffic efficiency, especially on roads where multiple lanes exist. While other line colors, such as white, typically separate lanes of traffic moving in the same direction, yellow lines are specific to designating separations where lane changes may occur within a one-way street context. Thus, understanding the function of yellow lines is essential for safe navigation on all types of roadways.