Double Solid Yellow Center Line sign

What to do

Never cross it to pass. Crossing to turn left into a driveway or side street is governed by state law.

Never cross double yellow lines to pass; stay to the right of them and wait for a broken line on your side.

Where it's used

Section 3B.01 says center lines separate traffic moving in opposite directions and must be yellow, and two normal-width solid yellow lines are the two-direction no-passing zone marking. On undivided two-way roads with four or more lanes always open to traffic, the double solid yellow line is the required center line unless there is a reversible or two-way left-turn lane. On two-lane roads, no-passing zones are marked where passing sight distance is shorter than the minimums in Table 3B-1, for example over hills and around curves.

Don't confuse it with

• Solid and Broken Yellow Lines (one-direction no-passing): A solid-and-broken pair lets traffic next to the broken line pass, while a double solid line bans passing in both directions.
• Double Solid White Line: A double solid white line separates lanes going the same direction, while double yellow separates opposing traffic.
• Two-Way Left-Turn Lane Markings: A two-way left-turn lane has a solid and a broken yellow line on each side of a center lane, not two solid lines together.