Single Solid Yellow Line - Meaning

What does a single solid yellow line mean?

A single solid yellow line marks the center of a road with two-way traffic, separating lanes moving in opposite directions. A solid yellow centerline means passing is not allowed, which helps prevent head-on collisions by keeping traffic safely apart.
You will often see this type of solid yellow line on highways.

TIP: Studying for your DMV test? Check out our list of road signs and their meanings

Single Solid Yellow Line - What To Do

If you see a solid yellow line in the middle of the road, keep in mind that passing is not allowed in either direction.

• Stay in your lane and avoid crossing the line
• Do not attempt to pass other vehicles