Which of the following is true about left-edge lines on one-way roads?

• A. They are white
• B. They are yellow
• C. They are black
• D. They are blue

Answer: (B)

On one-way streets, edge lines use opposite colors compared to typical two-way roads. The left edge is marked with a yellow line, which helps you instantly recognize the far left boundary of the roadway and confirms you’re on a one-way street. Stay to the right of that line as you travel. White lines are used for the right edge on most roads, not the left on one-way streets. Black and blue are not used for pavement edge lines.