Ask Trooper Steve: What are the rules when it comes to the double yellow line?

Broken White Lines : Gives you permission to to change lanes, overtake and take U-turns ||Continuous White Lines : On this road, you are not allowed to overtake. Just keep moving straight ||Single Yellow Line : On such roads, overtaking is allowed but only when you are on your side ||Double Continuous Yellow Lines : It implies no overtaking, no U-turns or no lane changes ||A Continuous And A Broken Yellow Line : If you are driving on the side of the broken lines, you can't overtake. But if you a

Yellow Lines

Safety - Yellowstone National Park (U.S. National Park Service)