What is the yellow dashed line in the middle of the road?

[HarrisonFitz]

Road center yellow dashed line is an indication marking used to separate opposing traffic flows, generally set on the road centerline. The yellow dashed line represents that crossing is allowed, and drivers can cross the line to overtake or turn when ensuring safety. The differences between yellow and white lines are as follows: Yellow line: Yellow lines are used to separate lanes in different directions, usually painted in the middle of the road like a divider, separating the road into two directions. Whether it's a single or double yellow line, as long as it's solid, crossing is strictly prohibited. There should be no crossing during normal driving. Whether it's a single or double yellow line, if it's dashed, overtaking or U-turns are allowed when safety is ensured. Single yellow lines are generally used on roads with up to 4 lanes (including bicycle lanes), while double yellow lines are used on wider roads. White line: White lines are used to separate different lanes in the same direction. Dashed lines allow lane changes and merging. Solid lines mean no lane changes or merging is allowed.