What does the yellow dashed line indicate?

[KendraFitz]

Yellow dashed lines are often seen at the entrance of ramps merging into main roads, allowing vehicles to cross over from the dashed side into the main road. Below is relevant information about yellow dashed lines: Function of yellow dashed lines: First, the yellow dashed line serves as a divider, separating the road into left and right sections. These lines are typically painted on narrower roadways. The purpose of the yellow dashed line is to distinguish opposing traffic flows, given the high volume of vehicles on the road. Without proper separation, collisions between oncoming vehicles could lead to traffic accidents, which would be highly undesirable. Whether single or double, yellow dashed lines permit overtaking or U-turns when it is safe to do so. Length of yellow dashed lines: For secondary roads with a pavement width of 8.5 meters or more, a yellow dashed centerline should generally be painted to separate opposing traffic flows. For secondary roads with a pavement width of 7.0 meters, a yellow dashed centerline with a line width of 10 cm can be used.