What are the markings that allow U-turns on the road?

[Dennis]

On the road, the markings that allow U-turns are two yellow lines in the center of the road. The left yellow line is a solid yellow line, and the right yellow line is a dashed yellow line, indicating that a U-turn is permitted. Below is an introduction to situations where U-turns are not allowed and where they are permitted. Situations where U-turns are allowed: There is a U-turn sign at the intersection; there are no explicit signs prohibiting U-turns or left turns at the intersection; within the yellow grid line area. Situations where U-turns are not allowed: Places with no U-turn signs; when driving on a one-way street, U-turns are not allowed; road guidance markings do not permit U-turns, and if only a straight arrow is marked on the left, U-turns are not allowed; intersections where the center of the road has a solid yellow line do not allow U-turns; U-turns are not permitted on auxiliary roads.