What is the purpose of the yellow dividing line in the middle of the road?

[GabrielAnn]

The yellow dashed line in the center of the road is an indication marking. The yellow dashed line in the center of the road is mainly used to separate opposing traffic flows. If the center of the road has a yellow solid and dashed line, the solid line side prohibits vehicles from crossing the line or making left turns, while the dashed line side allows vehicles to cross the line for overtaking or making left turns. Additional information: 1. Yellow dashed line at the roadside: A yellow dashed line at the roadside indicates that long-term parking is prohibited. Yellow lines are used to distinguish lanes in different directions, typically painted in the middle of the road, acting like a divider that separates the road into two directions. 2. Double yellow dashed lines: Double yellow dashed lines indicate a tidal flow lane. Tidal flow lanes refer to lanes that are opened on certain roads based on varying traffic conditions during peak hours, adjusting the number of lanes by changing the direction of lane lights to control the flow direction on the main road, thereby improving lane usage efficiency.